* Logs: Fix parsing for logfmt fields that have parens

- added `()`, `[]`, and `{}` to be allowed in logfmt field names

* Fix matcher

Besides minor language corrections, this tries in particular to
provide some clarity about the `step` setting in the Prometheus range
query and the `$__interval` variable:

- First of all: They are both always the same.

- What's really confusing (and arguably really un-helpful) is that the
  _Min time interval_ is multiplied by the resolution
  factor. Therefore, I just state the fact here now but don't add
  anything like "This should be the scrape interval" because it is not
  true (if resolution is `1/10`, a meaningful _Min time interval_ is
  generally a tenth of the scrape interval).

- More helpful is the _Min step_ parameter, because it is not
  multiplied by the resolution factor (which I have now stated
  explicitly). Of course, the _Min time interval_ has to be set to
  something small so that the _Min step_ parameter can kick in.

It would be good if we could also override the _Min time interval_
tool tip because that is where most people will look, and the current,
very Graphite-centric tool tip is very confusing for the Prometheus
query editor, in particular because it doesn't have any hint about the
resolution factor being applied. See #21413.

Signed-off-by: beorn7 <beorn@grafana.com>

* add formatting

* remove logging

Fixes #21362

* ApiUser: Fix response when enabling, disabling or deleting a nonexistent user

* create tabs component

* replace tabs in pageheader

* splitting two different types of tabitems

* fix index and conditionals in tabs

* redo tabs to not render anchor links

* rename to className and use cx to combine classes

* reverting back to a simpler use case

* moving type to types file

* fix import

* redoing Tabs to simpler composition components

* pr feedback

* update snapshot

* use icon component, added knob for storybook

* Added text align option to column styles, tests

* table panel migrations

* added tests

* default column style is now auto

* tests and fixtures...

* wrong comments need removing

* xss guard

* test

* Some test for invalid options, formatting.

* Remote branch tracking.

This might help with the general tone of voice in https://github.com/grafana/grafana/issues/6983 😕

* Footer: Single footer implementation for both react & angular pages

* Export type

* Updates

* Use footer links in help menu

* Updates & Fixes

* Updated snapshot

* updated snapshot

* added alert state validation before changing its state

* modified boolean condition

* converted most occurring string into const

* referred the const of alert models

* AddDataSource: Added missing phantom plugin

* Fixed test

* fix dispense

* plugin loading refactor

Moves common functionality of registering, starting,
stopping and restarting backend plugins to
backendplugin package.

* simplify plugin descriptors

* target sdk v0.5.0

Co-authored-by: Kyle Brandt <kyle@kbrandt.com>

* remove anon funcs, removed options from state, removed update method, static selects as constants

* cancellable promise

* cancel promise on unmount

* use new datasource funcs for dryer component

* Handle dimension value if passed as array

* Break out dimension value loading into its own func

* Docs: explain how to setup the apt repo without helpers

* Docs: re-structured apt install docs

* Update docs/sources/installation/debian.md

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

* Update docs/sources/installation/debian.md

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

* Docs: improvements based on feedback

* Docs: appending is safer if the user for some reason wants both beta and non beta

* Docs: repo -> repository

* Update docs/sources/installation/debian.md

Co-Authored-By: Arve Knudsen <arve.knudsen@gmail.com>

* Update docs/sources/installation/debian.md

Co-Authored-By: Arve Knudsen <arve.knudsen@gmail.com>

Co-authored-by: Diana Payton <52059945+oddlittlebird@users.noreply.github.com>
Co-authored-by: Arve Knudsen <arve.knudsen@gmail.com>

- Added Squadcast section 
- Added Squadcast to the **All supported notifiers** table.

* WIP: New types and state refactoring

* Added buildCategories & tests

* Added phantom plugins

* fixed tests

* Minor changes, force enterprise plugins to enterprise category

* Fixed tests

* Rendering: fix dashboard rendering when using sub url

* rollback on render.go: no need to add sub-path

Fixes #21320

Updated instructions to reflect the changes to the installation page.