Check errors in pkg/tsdb.

* Document Makefile

* Fix review comments

* Rename group to Services

* Fix review comments

* pkg/services: Check errors
* pkg/services: Don't treat context.Canceled|context.DeadlineExceeded as error

Logs the real (dynamic) HTTP port when configured 
Grafana using setting.HttpPort = 0.

Fixes #16709

* Make it clear that role switching is not supported

* Update docs/sources/features/datasources/cloudwatch.md

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

fixes #19761

Clarified the audience for ISSUE_TRIAGE.md

* Chore: Updates yarn.lock

* Chore: Fixes @types/webpack conflict

pkg/plugins: Only warn if plugins fail to load. Fixes #19846

* Bump storybook to 5.2.4

* Update yarn.lock

* Babel bump

* Add core-js 2 to dev deps for babel to resolve dependencies correctly

This is because storybook 5.2 introduced core-js 3.x which caused babel to have problems resolving core-js dependencies

* Basic components for HTTP settings migration WIP

* Add secureJsonFields to DataSourceSettings

* Introduce datasource-http-settings-next directive for backward compatibility

* fix lint

* renames

* rename fix

* TagsInput component

* move tags from app to grafana/ui

* implement tagsinput on datasourcesettings

* capitalize

* new file for react directive for testing

* some layout touch ups

* FormField story

* Minor touch ups

* add url validation

* using prevent default to prevent updating datasource when adding tag

* using Stylefactory and fix tslint issue on MouseEvent

* only show tlsauthsettings if tls or ca cert

* fix url input length

* fix for showAccessOptions

* Implemented CertTextArea, removed commented code

* removed commented / not used code

* Rename and add more elements to Certification component

* fixing newSecureJsonData

* spelling

* Fix issue with checkboxes being undefined

* Removed old partials and minor fix

* removed unused props from story

* WIP: Initial hardcoded version

* Feature: Introduces SearchFiltering to Graphite

* Feature: Adds searchFiltering to MySql

* Tests: Adds tests to Graphite and MySql

* Feature: Adds $__searchFilter to TestData

* Refactor: Adds searchFilter to Postgres and extracts function

* Tests: Adds tests to variable

* Refactor: Adds debounce and lodash import optimization

* Docs: Adds documentation

* Refactor: Removes unused function and fixes typo

* Docs: Updates docs

* Fixed issue with UI not updating when no  was used due to async func and no .apply in the non lazy path

* Introduce next-gen form spacing variables
* Update snapshots

* Introduce new color primitives for next-gen forms
* Introduce next-gen form functional colors palette
* Update snapshot

* bumping angular from 1.6.6 -> 1.6.9

* forgot lock file

Minor edit

Edited several docs in the contribute folder.

This is useful when working with backend plugins and grafana at the same time. Makes it so Grafana has a chance to shutdown the external process. An os.Interrupt signal is first sent, then after a five second wait a a force kill will be sent if the process is still running.

* Changelog: 6.4.3 release

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

* Unsubscribe on unmount

* Fix unsubscribe

* build: update scripts go.(mod|sum)

* build: exclude gosec rule G108

Gosec rule G108: Profiling endpoint automatically exposed on /debug/pprof
is not applicable since we only enable /debug/pprof endpoint if -profile
flag is provided when starting grafana.