Adds support for validating query in alert for mysql, 
postgres and mssql.

Fixes #13155

* first things and story

* fixed data structure and fixed picker

* remove console log

* move variables into global scope

* merge master

* TimeSeries: datasources with labels should export tags (not labels) (#18977)

* merge master

* export prometheus tags

* Annotations: Add annotations support to Loki (#18949)

* Explore: Unify background color for fresh logs (#18973)

* Singlestat: render lines on the panel when sparklines are enabled (#18984)

* Image rendering: Add deprecation warning when PhantomJS is used for rendering images (#18933)

* Add deprecation warning

* Update pkg/services/rendering/rendering.go

Co-Authored-By: Marcus Efraimsson <marcus.efraimsson@gmail.com>

* Units: Adding T,P,E,Z,and Y bytes (#18706)

* Adding T and P for bytes

Luckily, all the hard work was done before; just added in these prefixes for our production environment.

* Future-proofing with other values (why not?)

* Yottaflops?

* Cutting back down to Peta sizes, except for hashes

* Refactor: move ScopedVars to grafana/data (#18992)

* Refactor: Move sql_engine to sub package of tsdb (#18991)

this way importing the tsdb package does not come with xorm dependencies

* use DataFrame in heatmaps

* actually use the setting :)

* remove unused timeSrv

* merge with master / useDataFrames

* fix test function

* merge master

* fix datasource type on snapshot

* reuse DataFrame calcs from graph panel

* update comments

* PanelModel: moved datasource: null away from defaults that are removed

* Added unit test

This reverts commit 88051258.

* Adding Indian Rupee (INR) to currencies

This change adds formal support for the Indian Rupee in the list of currencies.

* fix comma

* Keybindings: Improve esc / exit / blur logic

* Slight modifications

* removed use of jquery

* Fix: Skips test for module.js for plugins of renderer type
Fixes #19130

* Refactor: Changes after PR comments

* Chore: Fixes go lint issue

* Multi-LDAP: Do not fail-fast on invalid credentials

When configuring LDAP authentication, it is very common to have multiple
servers configured. When using user bind (authenticating with LDAP using
the same credentials as the user authenticating to Grafana) we don't
expect all the users to be on all LDAP servers.

Because of this use-case, we should not fail-fast when authenticating on
multiple LDAP server configurations. Instead, we should continue to try
the credentials with the next LDAP server configured.

Fixes #19066

Closes #19257

* Refactor: Makes PanelEditor use state and shows validation message on AlerTab

* Refactor: Makes validation message nicer looking

* Refactor: Changes imports

* Refactor: Removes conditional props

* Refactor: Changes after feedback from PR review

* Refactor: Removes unused action

* Chore: Update Slate to 0.47.8
Closes #17430

* Update documentation-style-guide.md

Added heading rules

* Update documentation-style-guide.md

Added ampersand rule

* hide textarea element after click 'Copy Invite' button on firefox

This reverts commit 98c2e24c73d47996c597fe6d5f7fd73bd15a18f8.

* build: make sign rpm packages not depend on checking out private key

* build: move commands from circleci config into verify signed packages script

* build: split update and publish of deb and rpm into two scripts

* use files argument for sign and verify packages

* validate files argument for sign and verify packages

* update test publish of deb/rpm readme

Adds support for scanning the grafana/grafana:master docker image 
using trivy in circle ci each night.

Fixes #19251

* QueryEditor: Clean-up interface to only have one PanelData

* Renamed to prop name to data

Minor grammar and clarity improvements

* Create glossary.md

* Update glossary.md

Added definition for panel

* Update glossary.md

* Update glossary.md

* Update glossary.md

Fixed closing table tag

* Create STYLEGUIDE.md

* Update STYLEGUIDE.md

Added a placeholder for image guidelines, someone needs to add specificity

Added Capitalization section

Expanded Word usage

* Update STYLEGUIDE.md

Edited panel definition

* Update STYLEGUIDE.md

Applied Brenda and Marcus's edits

* Moved style guide to style_guides folder and renamed, added README to the style_guides folder, other minor edits

* Update doc-style-guide.md

* Style updates

Changed a couple doc names for consistency, updated file naming conventions and README links

* Corrected file names

Changed file names back to original, clarified file naming convention in documentation-style-guide

Found some additional debug statements in relation to #19049 that 
can cause memory issues.

Ref #19049

Fixes #11472