Fix error

Updates changelog with MR ID

changes environment.last_deployment to a try expression so it does not fail if environment is not yet set

Removed unneeded `project_title` code and last reference

Added CHANGELOG entry

Tidied up UX

Corrected naming convention issues with removing inline JS

@deckar01 saves the day! Simplified `toggleSidebar` and `hideSidebar`

Review changes

Merge conflicts and update autoscroll button

Added subnav to blame show, blob edit, builds show, commit builds, commit show, environments edit and pipelines show

Added subnav to new enviro view

Added sidebar top position calculation logic

Added sidebar translation to follow the subnav up when the body is scrolled until a certain limit

Closes #18515

Added sidebar
Removed elements not present in design

This reverts commit 3e991230.

# Conflicts:
#	app/models/project.rb

With new navigation design it makes no sense to duplicate title in the
header
Signed-off-by: NDmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

We send a state of ansi2html to client, client needs to send this state back.
The state describes the configuration of generator and position within trace.