Changed CSS transition property for only values that change

- Adds animation when opening & closing the sidebar
- Adds an animation when dragging boards to a new position
- Adds animations to dragging issues around

When opening the sidebar it will also animate the scrollLeft property to
make moving to the opened issue less blunt.

Closes #25630

rewrite the item.respond_to?(:x?) && item.x? to item.try(:x?)

See merge request !8409

Add tests to cycle analytics

See merge request !7727

API: extern_uid is a string

Closes #26227

See merge request !8404

Update octokit to 4.6.2

See merge request !8158

Increases pipeline graph drowdown width in order to prevent strange position on chrome on ubuntu

Closes #26218

See merge request !8399

Adds MR ID to changelog entry

Remove time zone information from assertion in timeago tooltips spec

Closes #26183

See merge request !8374

Enable HAML-LINT linters

Closes #22072

See merge request !8247

Improved the u2f flow

Closes #18556

See merge request !8304

Make tabs full-width at small viewport

Closes #26201

See merge request !8369

Fix failures in default sort order spec

See merge request !8379

Fix redirect after update file when user has forked project

Closes #25578

See merge request !8371

Test cases were not waiting for page load after clicking.
This caused failures in test cases that were executed right after
these incorrect ones, because of requests hitting server after
a test was finished.
We do not have to click links, we can go directly to a correct page
by passing parameters in the URL.