Call QuickActionsService on Note update

Add support for notes which just contain
commands after editing

Return http status gone (410) if note was deleted

Temporary frontend addition so it is not
failing when a note is deleted

Move specs to shared examples

Fix rubocop style issue

Deleting note on frontend when status is 410

Use guard clause for note which got deleted

Simplified condition for nil note

This method should no longer be called
with nil note

Refactoring of execute method to reduce
complexity

Move errors update to delete_note method

Note is now deleted visually when it only
contains commands after update

Add expectation

Fix style issues

Changing action to fix tests

Add tests for removeNote and update
deleteNote expectations

Add keyboard shortcuts `p` and `n` to navigate duscussions.

Send a `persist_filter: false` param to backend when
opening links to notes and auto-switching to show
all notes

New API endpoint for merge request count
Updates all open tabs at the same time with one call
Restructured API response

API response changed to 401 if no current_user

Added API + JS specs

Fix for Static Check

Updated Count on Open/Close, Assign/Unassign of MR's

Checking if MR Count is refreshed

Added # frozen_string_literal: true to spec

Added Changelog