* Build: use golangci-lint as a make command

* Since gometalinter was deprecated in favor of golangci-lint so it was
  replaced by it. Responsibilities held by the gometalinter was moved to
  golangci-lint

* There was some changes in implementation (that was also mentioned in
  the code comment) between the tools, which uncovered couple errors
  in the code. Those issues were either solved or disabled by
  the inline comments

* Introduce the golangci-lint config, to make their
  configuration more manageable

* Build: replace backend-lint.sh script with make

Reverts performance enhancements made to LogsContainer as they are no
longer needed, and complicated things.
Closes #17818

Closes #17687

* Docs: correct link to the Grafana build-container.

* Docs: documents usage on the gopath when upgrading deps.

* Dev docs: info for upgrading deps only in one location.

old docker image, https://hub.docker.com/r/opower/opentsdb/,  seems to be gone

* Add LDAP config instead sed use

* Add container name

* Add SizeLimit option to client and to server.
  Probably useless at this point, but it's better to have it then otherwise

Define errors in the login module only if they are used

* Add test for disabled auth proxy auto signup option

* Set correctly auth proxy auto signup

* OAuth: github team sync POC

* OAuth: minor refactor of github module

* OAuth: able to use team shorthands for github team sync

* support passing a list of groups via auth-proxy header

* noImplicitAny Stackdriver

* Sub 3000 noImplicitAny

* Update error count limit

* Add DataQueryRequest type

* TimePicker: Restore time picker settings

* CleanUp: removed unuused angular-ui (calendar) components

* Fix angular boot dependency list

* TimePicker: set time to 23:59:00 when setting To time using calendar

Fixes #17839: __value is displayed instead of __text when single item is selected

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