Use url params for explore state

Dont parse empty explore state from url

* get id from path param when updating a playlist

* add playlist http api documentation

* remove required condition for the id in update cmd

Explore: calculate query interval based on available width

- classic dashboard panels inject a dynamic query interval as part of
  the query options. Explore did not have that.
- this PR adds the interval calculation to Explore
- interval based on Explore container's width
- ensure min interval if set in datasource

- putting state in the path components led to 400 on reload
- use `/explore?state=JSON` instead

- only parse url state if there is any
- prevents parse exception in the console on empty explore state

Adding eval_data to alerts query results

Adds commented out settings in nginx conf
for testing basic auth and auth proxy

* devenv: working on dev env setup & dashboards

* devenv: refactored testdata app to a built in datasource instead, and moved dashboards to a devenv provisioned dashboards

Explore Datasource selector

Author:    Mark Meyer <mark@ofosos.org>

* Comment out unused vars

* Remove unused sass vars

Adds a datasource selector to the Explore UI. Only datasource plugins
that have `explore: true` in their `plugin.json` can be selected.

- adds datasource selector (based on react-select) to explore UI
- adds getExploreSources to datasource service
- new `explore` flag in datasource plugins model
- Prometheus plugin enabled explore

Prevent scroll on focus for iframe

Fix freezing browser when loading plugin

- broken since 4d2dd220
- `*` was previously working as a path matcher, but freezes browser when
  used with new cache-busting plugin loader
- changed matcher to be `/*`

* check extended statistics pattern

* check extended statistics pattern

* Revert "check extended statistics pattern"

This reverts commit 52c7b1a972636d5f5729e64ae5e00e6fae329257.

* add test

* fix test

* Rewriting team pages in react

* teams to react progress

* teams: getting team by id returns same DTO as search, needed for AvatarUrl

* teams: progress on new team pages

* fix: team test

* listing team members and removing team members now works

* teams: team member page now works

* ux: fixed adding team member issue

* refactoring TeamPicker to conform to react coding styles better

* teams: very close to being done with team page rewrite

* minor style tweak

* ux: polish to team pages

* feature: team pages in react & everything working

* fix: removed flickering when changing tabs by always rendering PageHeader

* prevent error to use $__interval_ms in query

* add test

* prevent error to use $__interval_ms in query

fix: folder picker did not notify parent that the initial folder had been changed, fixes #12543 (#12554)

* New rebase

Signed-off-by: Lukasz Gryglicki <lukaszgryglicki@o2.pl>

* Lint

Signed-off-by: Lukasz Gryglicki <lukaszgryglicki@o2.pl>

* Add folder name to dashboard title. No display on medium displays and below

* Compare folderId instead

* folderId bigger than 0

- allow css loader to be imported again (wasnt prefixed by plugin)