Elasticsearch v7.0 changed the behavior of max concurrent shard
requests and the default to 5. v5.6 and before 7.0 the default
is 256. This adds some additional behavior given certain
version is selected when configure the datasource to set
default max concurrent shard requests.
Changing from a version pre-v7.0+ to v7.0+ sets max
concurrent shard requests to 5.
Changing from a version v7.0+ to a pre-v7.0 sets max
concurrent shard requests to 256.

Fixes #17454

Adds back support for filtering log messages by series level 
in logs graph which seem to have been broken since merging
of #17027.

Fixes #17769

Adds version note for alert rule tags.
Adds version note for graph data links.
Adds information about secret_key and encryption format in use

Fixes #17815
Fixes #17803

* Add test that expects a POST request

* Change graphite /metric/find request to POST

Query parameter can become large enough
to exceed GET URI limits.

* Fix requests with time range

Initialise httpOptions.params

* Fix for supporting queries referencing template variable

Toolkit: moved front end cli scripts to separate package and introduced very early version of plugin tools

* Move cli to grafana-toolkit

* Moving packages, fixing ts

* Add basics of plugin build task

* Add toolkit build task

* Circle - use node 10 for test-frontend

* Prettier fix

* First attempt for having shared tsconfig for plugins

* Add enzyme as peer depencency

* Do not expose internal commands when using toolkit from npm package

* Introduce plugin linting

* Fix missing file

* Fix shim extenstion

* Remove rollup typings

* Add tslint as dependency

* Toolkit - use the same versions of enzyme and tslint as core does

* Remove include property from plugin tsconfig

* Take failed suites into consideration when tests failed

* Set ts-jest preset for jest

* Cleanup tsconfig.plugins

* Add plugin:test task

* Rename file causing build failute

* Fixing those missed renames

* Add ts as peer dependency

* Remove enzyme dependency and tweak test plugin task

* Allow jest options overrides via package.json config

* Improvements

* Remove rollup node packages

* TMP : Fix ts errors when linked

* use local tslint if it exists

* support coverage commands

* Fix merge

* fix build

* Some minors

* Make jest pass when no tests discovered

* Wip: Intiail commit

* Refactor: Replaces TimePicker in Explore

* Refactor: Removes Angular TimePicker folder

* Refactor: Adds tests for getShiftedTimeRange

* Fix: Fixes invalid import to removed TimePicker

* Fix: Fixes dateTime tests

* Refactor: Reuses getShiftedTimeRange for both Explore and Dashboards

* Refactor: Shares getZoomedTimeRange between Explore and Dashboard

* Refactor: Uses nanosecond string to retreive LogRow contexts

* Reafactor: Small changes to comments after PR comments

Fixes #17696

* Reduce noImplicitAny errors to 3900-ish

* Fix lots of errors

* Add interface

Adds URL support for mode state (Metrics/Logs). It's important 
to be able to share a link to logs when a data source supports 
both metrics and logs.

Closes #17101

* variable number of points

* add variable number of bands

Closes #17713

Fixes #17715

* Refactor: Removes switches for TimeStamp and LocalTime and displays time as configured for user

* Styles: Updates classname used to display timeUtc

* Refactor: Adds switch for Time column

* Replace remarkable with marked

* Add wrapper and options for marked

getTimeZone() no longer returns an object, but a string

* Prometheus: Minor style fix

* Updated snapshot

* Modify backend to allow expiration of API Keys

* Add middleware test for expired api keys

* Modify frontend to enable expiration of API Keys

* Fix frontend tests

* Fix migration and add index for `expires` field

* Add api key tests for database access

* Substitude time.Now() by a mock for test usage

* Front-end modifications

* Change input label to `Time to live`
* Change input behavior to comply with the other similar
* Add tooltip

* Modify AddApiKey api call response

Expiration should be *time.Time instead of string

* Present expiration date in the selected timezone

* Use kbn for transforming intervals to seconds

* Use `assert` library for tests

* Frontend fixes

Add checks for empty/undefined/null values

* Change expires column from datetime to integer

* Restrict api key duration input

It should be interval not number

* AddApiKey must complain if SecondsToLive is negative

* Declare ErrInvalidApiKeyExpiration

* Move configuration to auth section

* Update docs

* Eliminate alias for models in modified files

* Omit expiration from api response if empty

* Eliminate Goconvey from test file

* Fix test

Do not sleep, use mocked timeNow() instead

* Remove index for expires from api_key table

The index should be anyway on both org_id and expires fields.
However this commit eliminates completely the index for now
since not many rows are expected to be in this table.

* Use getTimeZone function

* Minor change in api key listing

The frontend should display a message instead of empty string
if the key does not expire.

* Update datasource.ts

* Update datasource.test.ts

* utcOffset reverse

from moment docs, utcOffset "function returns the real offset from UTC, not the reverse offset"

* add utcOffset() to DateTime interface

method returns the UTC offset as a number of minutes

* Fixed test

and add comment about Rollup namedExports

* Feat: initial disable user UI

* batch disable users

* batch revoke users tokens

* split batch disable user and revoke token

* API: get users with auth info and isExternal flag

* fix tests for batch disable users

* Disable users: show is user external or not

* Users: refactor /api/users/search endpoint

* Users: use alias for "user" table

* Chore: add BatchDisableUsers() to the bus

* Users: order user list by id explicitly

* Chore: switch back to /api/users/search endpoint

* Users: move disable button to user profile page

* Users: return AuthModule from /api/users/:id endpoint

* Users: do not return unused fields

* Users: mute auth badge for disabled users

* Users: move disable button to the user section

* Users: fix SearchUsers method after last changes

* User: return auth module as array for future purposes

* User: tests for SearchUsers()

* User: return only latest auth module in SearchUsers()

* User: fix JOIN, get only most recent auth module

* Users: fix ldap badge after backed changes

* Users: show tooltip for inactive disable/enable button

* Users: move delete button to edit user view

* Users: put deactivated badge on the user list

* Users: minor refactor

* Users: adjust deactivated badge style

* Minor design changes

* batch disable users

* batch revoke users tokens

* split batch disable user and revoke token

* API: get users with auth info and isExternal flag

* fix tests for batch disable users

* Users: refactor /api/users/search endpoint

* Users: use alias for "user" table

* Chore: add BatchDisableUsers() to the bus

* Users: order user list by id explicitly

* Users: return AuthModule from /api/users/:id endpoint

* Users: do not return unused fields

* Users: fix SearchUsers method after last changes

* User: return auth module as array for future purposes

* User: tests for SearchUsers()

* User: return only latest auth module in SearchUsers()

* User: fix JOIN, get only most recent auth module

* Wip: Adds timeEpic

* Refactor: Introduces absoluteRange in Explore state

* Refactor: Removes changeTime action

* Tests: Adds tests for timeEpic

* Refactor: Spells AbsoluteRange correctly

* Specifying named exports for slate

* Make sure tests are performed at the beginning

* Version bump

* Closes #17748

* Remove remaining occurences

* And the last one

* Devenv:SAML: devenv block with saml test app

Includes documentation, couple custom users and
actual docker-compose of course :)

Ref: #4780

* Docs: for LDAP active sync feature

* WIP: initial panel links editor

* WIP: Added dashboard migration to new panel drilldown link schema

* Make link_srv interpolate new variables

* Fix failing tests

* Drilldown: Add context menu to graph viz (#17284)

* Add simple context menu for adding graph annotations and showing drilldown links

* Close graph context menu when user start scrolling

* Move context menu component to grafana/ui

* Make graph context menu appear on click, use cmd/ctrl click for quick annotations

* Move graph context menu controller to separate file

* Drilldown: datapoint variables interpolation (#17328)

* Add simple context menu for adding graph annotations and showing drilldown links

* Close graph context menu when user start scrolling

* Move context menu component to grafana/ui

* Make graph context menu appear on click, use cmd/ctrl click for quick annotations

* Add util for absolute time range transformation

* Add series name and datapoint timestamp interpolation

* Rename drilldown link variables tot snake case, use const values instead of strings in tests

* Bring LinkSrv.getPanelLinkAnchorInfo for compatibility reasons and add deprecation warning

* Rename seriesLabel to seriesName

* Drilldown: use separate editors for panel and series links (#17355)

* Use correct target ini context menu links

* Rename PanelLinksEditor to DrilldownLinksEditor and mote it to grafana/ui

* Expose DrilldownLinksEditor as an angular directive

* Enable visualization specifix drilldown links

* Props interfaces rename

* Drilldown: Add variables suggestion and syntax highlighting for drilldown link editor (#17391)

* Add variables suggestion in drilldown link editor

* Enable prism

* Fix backspace not working

* Move slate value helpers to grafana/ui

* Add syntax higlighting for links input

* Rename drilldown link components to data links

* Add template variabe suggestions

* Bugfix

* Fix regexp not working in Firefox

* Display correct links in panel header corner

* bugfix

* bugfix

* Bugfix

* Context menu UI tweaks

* Use data link terminology instead of drilldown

* DataLinks: changed autocomplete syntax

* Use singular form for data link

* Use the same syntax higlighting for built-in and template variables in data links editor

* UI improvements to context menu

* UI review tweaks

* Tweak layout of data link editor

* Fix vertical spacing

* Remove data link header in context menu

* Remove pointer cursor from series label in context menu

* Fix variable selection on click

* DataLinks: migrations for old links

* Update docs about data links

* Use value time instead of time range when interpolating datapoint timestamp

* Remove not used util

* Update docs

* Moved icon a bit more down

* Interpolate value ts only when using __value_time variable

* Bring href property back to LinkModel

* Add any type annotations

* Fix TS error on slate's Value type

* minor changes