* Change log 6.6.1

* Add PR co-authors

* fix label type for PR #21949

Co-authored-by: Sofia Papagiannaki <papagian@users.noreply.github.com>

* Datasource: updates PromExploreQueryEditor - rewrite to functional component

* Datasource: updates PromQueryField - moves an extra field from children to the separate prop

* Datasource: adds PromExploreExtraField

* Datasource: updates PromExploreQueryEditor - fixes typo

* Datasource: updates prometheus explore editor snapshots

* Datasource: updates PromExploreExtraField export

* Datasource: removes unnecessary div from PromExploreQueryEditor

* Datasource: adds basic PromExploreExtraField snapshot test

* Datasource: adds basic PromExploreQueryEditor test

* Datasource: updates PromExploreQueryEditor snapshot to fix timezone issues

* Datasource: updates PromExploreQueryEditor - onChangeQueryStep cleanup

* Datasource: updates PromExploreQueryEditor test to check ExtraFieldElement render

* Datasource: simplified PromExploreQueryEditor onStepChange method

* Datasource: updates Prometheus module import

* Datasource: updates PromExploreQueryEditor test

* Datasource: updates PromExploreQueryEditor tests

* Datasource: fixes PromExploreQueryEditor error on empty interval init

* Datasource: adds a tooltip to PromExploreExtraField mounted in PromExploreQueryEditor

* Datasource: updates PromExploreQueryEditor snapshots

* Explore: updates grafana-data explore query field props with explore mode

* Explore: updates query row to pass down explore mode to query fields

* Explore: adds LokiExploreQueryEditor

* Explore: updates loki query field form to render children

* Explore: adds loki explore extra field component

* Explore: adds extra field element to loki query field form

* Explore: updates loki explore query editor to use extra field element

* Explore: moves ExploreMode to grafana-data

* Explore: updates query row limit string

* Explore: adds maxLines to DataQuery

* Explore: adds maxLines to loki datasource runRangeQueryWithFallback

* Explore: adds onChangeQueryLimit to LokiExploreQueryEditor

* Explore: updates loki explore query editor to render extra field only in logs mode

* Explore: fixes query limits for live and legacy queries

* Explore: fixes result processor max lines limit in get logs result

* Explore: fixes Loki datasource limit test

* Explore: removes unnecessary ExploreMode from Loki language provider

* Explore: fixes formatting

* Explore: updates grafana-data datasource types - replaces strings with explore mode enum

* Explore: updates loki explore query field props to take ReactNode

* Explore: updates the way we calculate loki query lines limit to fall back to 0 lines on negative or invalid input instead of datasource maxLines

* Explore: updates result processor get logs result method to avoid counting invalid/negative line limits

* Explore: updates loki result transformer to process only an appropriate slice of a result instead of an entire one

* Explore: adds a method for query limit preprocessing/mapping

* Explore: updates loki datasource run range query with fallback method to use options.maxDataPoints in dashboards

* Explore: removes unnecessary maxlineslimt from getLogsResult in resultProcessor

* Explore: moves line limit to metadata

* Explore: adds an ability to specify input type of extra field

* Explore: updates LokiExploreQueryEditor - adds an input type

* Explore: updates LokiExploreQueryEditor to run queries when maxLines is positive

* Explore: fixes failing import of ExploreMode

* Explore: fixes reducers test imports formatting

* Explore: updates Loki extra field with min value set to 0

* Explore: exports LokiExploreExtraFieldProps

* Explore: adds render test of LokiExploreQueryEditor

* Explore: adds LokiExploreQueryEditor snapshot

* Explore: updates LokiExploreQueryEditor onChangeQueryLimit method to prevent it from running when query input is empty - fixes cheatsheet display issue

* Explore: updates Loki editor snapshots

* Explore: fixes typo in test set name in LokiExploreQueryEditor

* Explore: adds a render test of LokiExploreExtraField

* Explore: fixes typo in LokiExploreQueryEditor

* Explore: updates LokiExploreQueryEditor snapshot due to timezone issues

* Explore: updates LokiExploreExtraField to export both functional component and a version using memo

* Explore: updates LokiExploreQueryEditor to export both functional component and memoized function

* Explore: updates LokiExploreQueryEditor - removes unnecessary react fragment

* Explore: updates LokiExploreQueryEditor snapshot

* Explore: adds LokiExploreQueryEditor tests for different explore mode cases

* Explore: fixes Loki datasource and result transformer

* Explore: updates LokiExploreQueryEditor snapshot

* Explore: updates LokiExploreQueryEditor tests and test setup

* Explore: updates LokiExploreQueryEditor - refactors component

* Explore: updates LokiExploreQueryEditor to use default import from LokiExploreExtraField

* Explore: updates LokiExploreQueryEditor snapshot

* Explore: fixes formatting

* Explore: updates LokiExploreQueryEditor max lines change

* Explore: updates LokiExploreQueryEditor tests checking ExtraFieldElement

* Explore: adds mock loki datasource to LokiExploreQueryEditor

* Explore: updates LokiExploreQueryEditor test mock - adds language provider

* Explore: updates LokiExploreQueryEditor snapshot

* Explore: updates Loki ResultTransformer to filter out rows on limit - logic to be moved into a component with new form styles

* Explore: updates LokiExploreQueryEditor tests

* Update paths for Storybook categories

* Restructure categories

It was missing for ldap_login which means that the first signup failed
for users with LDAP+quota enabled. There's also potential cases where we
can't provide a request context (background jobs) which is also covered,
but needs a refactoring.

* Add documentation for explore and logs panel features

* Update docs/sources/features/explore/index.md

* Docs: Update

* Update docs/sources/features/panels/logs.md

Co-Authored-By: Diana Payton <52059945+oddlittlebird@users.noreply.github.com>

* Update docs/sources/features/panels/logs.md

Co-Authored-By: Diana Payton <52059945+oddlittlebird@users.noreply.github.com>

* Update docs/sources/features/explore/index.md

Co-Authored-By: Diana Payton <52059945+oddlittlebird@users.noreply.github.com>

* Update docs/sources/features/explore/index.md

Co-Authored-By: Diana Payton <52059945+oddlittlebird@users.noreply.github.com>

* Update docs/sources/features/explore/index.md

Co-Authored-By: Diana Payton <52059945+oddlittlebird@users.noreply.github.com>

Co-authored-by: Diana Payton <52059945+oddlittlebird@users.noreply.github.com>

Annotations: Change indices and rewrites annotation find query to improve database query performance (#21915)

Drop indices and create new ones and rewrites annotation find query 
to address performance issues when querying annotation table and 
there is a large amount of rows.

Fixes #21902

Co-authored-by: Marcus Efraimsson <marcus.efraimsson@gmail.com>
Co-authored-by: Kyle Brandt <kyle@kbrandt.com>

Fixes #21914

* CircleCI: Move postgres/mysql integration tests to step after linting
* CircleCI: Implement publishing of packages and Docker images for new master pipeline

Adds back missing summary quantiles which was mistakenly
removed in v6.6.0. 

Fixes #21857

* delete redundant alias

Fixes #21906

* Added developer-resources.md

Added Developer resources and updated menu.yaml file

* Updated menu.yaml

Updated menu.yaml, changed folder name, and removed redundant file building_from_source.md and containing folder

* Removed links to deleted file

* Plugins: Add default query to PromQueryEditor

* Plugins: Update PromQueryEditor snapshot

* Plugins: Use Partial for default PromQuery

* DatasourceEditor: Add UI to edit custom HTTP headers

Support for custom headers was added in #11643 but was missing in the UI.

Fixes #12779

* Review

* Layout updates

Co-authored-by: Dominik Prokop <dominik.prokop@grafana.com>

* Datasource: Show access (Browser/Server) select on the Prometheus datasource configuration editor

* Trigger build

Fix typo in templating JSON

One has to use "grafana/grafana" image - only using "grafana" will
result in an error message like this:
Error response from daemon: pull access denied for grafana, repository does not exist or may require 'docker login'

It's a good idea to daemonize new container. The install instructions
for Docker do this, and this instructions assume that running container
already is daemonized (otherwise you wouldn't have to stop it).

Best practise would be to create a new container, then stop old one and
start new one - this would reduce downtime. To keep instructions simple
and understandable, I didn't include that.

* Add new global built-in variables #20523
new branch from master

* #20523 Revert change on __from and __to like requested

* #20523 simplify contextSrv access

* #20523 simplify contextSrv access

* #20523 repair jest tests

* reimplement hidefromtabs

* remove console log

* going with option b instead

* less explicit

Implements initial support for resources using v0.14.0 of SDK.

Ref #21512

This is to make the custom dockerfiles compatible with our instruction
to use persitent volumes for the /var/lib/grafana dir. Without this
change the contents of that folder will be overshadowed by the persitent
volume and none of the pre-installed plugins will be available.

Image Rendering: Fix render of graph panel legend aligned to the right using Grafana image renderer plugin/service (#21854)

Don't render class body--phantomjs on body element when 
PhantomJS renderer not is in use.

Fixes #21830