* Explore: Introduces storage keys for last used data source on per-orgId basis
Closes #17903

* Explore: Adds datasource plugin config option 'modesSupportingTextEdit'
This allows one to specify which modes support toggling query text edit on and off
Closes #17904

* Explore: Restricts query text edit toggle to metrics mode

In 42813448 the loadPluginCss util was migrated to @grafana/runtime package. This made SystemJS to fail loading the css files for a plugin. Root cause was that core and runtime used different SystemJS instances.

To solve the issue, I am exposing SystemJS from @grafana/runtime package to make sure we are always using the same instance. Also, the SystemJS dependency was moved to runtime.

Fixes: #17915 - Templating: __value's are displayed instead of __text's after variable is updated

Also replaces one-off segment detection functions in explore.ts with general purpose function
Closes #15462

include sass files in toolkit

* ChangePassword to React, created PasswordInput component, attempting UserProvider wrapper component, adding flex to btn row

* UserAPI interface, force classes on PasswordInput, remove api call from ChangePassword

* refactored out form

* clean up

* removed unnecessary bind, added loading state and loading component to change password form

* should be OR

* arrow funcs instead of binds, inline-block instead of flex, isSaving instead of isLoading, disabled button instead of spinner

* inline-flex on the react btn

* change state instatiatiation

* Explore: Adds support for toggling text edit mode in explore
Also modifies query-row-status css to use relative position instead of absolute
Closes #16770

* Explore: Defines State interface for <QueryRow /> and removes unnecessary constructor

* LDAP: Divide the requests

Active Directory does indeed have a limitation with 1000 results
per search (default of course).

However, that limitation can be workaround with the pagination search feature,
meaning `pagination` number is how many times LDAP compatible server will be
requested by the client with specified amount of users (like 1000). That feature
already embeded with LDAP compatible client (including our `go-ldap`).

But slapd server has by default stricter settings. First, limitation is not 1000
but 500, second, pagination workaround presumably (information about it a bit
scarce and I still not sure on some of the details from my own testing)
cannot be workaround with pagination feature.

See
https://www.openldap.org/doc/admin24/limits.html
https://serverfault.com/questions/328671/paging-using-ldapsearch
hashicorp/vault#4162 - not sure why they were hitting the limit in
the first place, since `go-ldap` doesn't have one by default.

But, given all that, for me `ldapsearch` command with same request
as with `go-ldap` still returns more then 500 results, it can even return
as much as 10500 items (probably more).

So either there is some differences with implementation of the LDAP search
between `go-ldap` module and `ldapsearch` or I am missing a step :/.

In the wild (see serverfault link), apparently, people still hitting that
limitation even with `ldapsearch`, so it still seems to be an issue.

But, nevertheless, I'm still confused by this incoherence.

To workaround it, I divide the request by no more then
500 items per search

* Teams: show proper label for each auth provider

Teams: don't sore AuthModule in team_member table, use JOIN to get it instead

* Teams: fix AddTeamMember after last changes

* Teams: add more auth provider labels

* Teams: show external sync badge if LDAP is not enabled

* Teams: tests for getting auth module

* Loki: Adds comment explaining usage of RFC3339Nano string

Except when those data sources are compatible, via query import.
Closes #17861

* Add guidelines for avoiding use of m alias for models

* Add suggestion for elimination of existing aliases

* Add docs for themes

* Edit description a little bit

* Update themes.md

Fixes #17874

* Add padding and centering

* Vertically center input

* Add noOptions styles

* Move reove button to same line

* StatsPicker: style tweak

* 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