* get rid of weird line breaks and use action

When using restarts/stops/starts you'd get weird output sometimes, Strange line breaks 'OK' status overlapping the next lines etc...
This fixes those moves OK to the right place and colorizes them correctly.

* added : for more uniformity

when doing a restart the output looked like:
Stopping Grafana Server ...                                [  OK  ]
Starting Grafana Server: ...                               [  OK  ]

The Stopping line did not have a colon. I added it just to make it look better.

Using these two values ties requests to a
particular query position within a panel, ensuring
that requests are canceled if:

- Duplicate requests with the same query are sent
- Requests from the same query position (but a
different query) are sent

The last point is important as it identifies
queries by a physical location in the dashboard
instead of with the query expression.  If a
different query from the same position in a panel
is sent, the previous request should be canceled.

Insert missing backtick.

* added hex units

* deleted blank line, to fix style error

* added unit tests

* updated unit tests and changed the way it handles negative hex0x

fix(login): fixed so that you  get redirect back to the page or dashboard you where on when you clicked on sign in link, fixes #3312

feat(templating): refactoring template variable handling for variables that change on time refresh, closes #5021