Updates regex to match tag names with periods when generating
series names in alerting evaluation (backend).

Fixes #9148

- Fixed BarGauge story throwing an error
- Added helpers for aligning stories

- Bumped Storybook to v5
- Introduced Emotion
- Add additional config for storybook (combinations add-on, default padding in preview pane)
- Added basic react based button components
- Introduced AbstractButton, Button and LinkButton components together with stories
- Exposed button components from @grafana/ui

Fixes #14615.

Removes extra escaping for regex filter values when using ad hoc
filters for Prometheus. The extra escaping causes queries with
regex characters to be invalid.

GitHub pagination was limiting the result to 30 issues.
This fix makes the changelog script return up to 100
issues. Will have to add a loop to fetch more once we
merge more than 100 PR's that should be added to the
changelog.

Also, fixes a bug where issues that were not included
in the milestone were being returned.

Chore: Eliminate implicit anys in backend_srv

* repalced rems with pixels and variables

* replaced rems with pixels and variables

* replaced rem with pixels or variables

* replaced rems with pixels or variables

* repalced rems with pixels and variables

Fixes #16040

Fix so that a template variable in the alias field is not interpolated on blur and only the value sent in the query is interpolated. Does a deep clone of the options.targets to avoid changing the original alias field.

* Docs: Updated changelog for 6.1 release

Also Updates the changelog cli task to group issues into bug fixes
and not bug fixes.

* Minor changelog fixes

Now returns uid in response to get notification channel by id.
Adds GET/PUT/DELETE support for notification channel by uid, 
  /api/alert-notifications/uid/:uid.
Break apart alerting and alert notification http api docs in two 
  pages and update documentation to make it up to date
  with current implementation.

Fixes #16012

docs: loki provisioning

There's no point in reading the body response without using
the result so removing it.

Fixes #9199
Ref #16207

Add oauth pass-thru option for datasources

* Update readmes

* Fix devenv dasboard query

* Update devenv readme

* Add link to devenv from docs

Fixes #14590

fix(react2angular): Fixed react to angular wrapper watching function expressions causing infinte digest loop, fixes #16194 (#16196)

* replace with Input component from grafana/ui

* removing placeholder classname

* change import

* fix import

Signed-off-by: Steven Sheehy <ssheehy@firescope.com>

update cloudwatch metrics/dimensions list