Resolve "Migrate spec/javascripts/vue_shared/components/file_icon_spec.js to Jest"

See merge request gitlab-org/gitlab-ce!32278

Change the way totalNotes is calculated

See merge request gitlab-org/gitlab-ce!32191

totalNotes is only used to prerender a number of
skeleton containers until real notes are loaded

issuable.discussions makes multiple requests, so
too expensive for this

This commit uses mere notes for this and sends
actual totalNotes number if it's less than 10;
otherwise it sends 10 - it allows us to avoid
bunch of skeleton prerenderings, which are not
necessary since they doesn't fit into the whole
screen and disappear quite fast

This commit creates a create_cluster directory to collect
all Vue applications related to creating kubernetes applications
using gitlab.

It also moves the gke_cluster_dropdowns collection of apps to
the create_cluster directory. gke_cluster_dropdowns contains
dropdown components used to select configuration options to
create a Kubernetes cluster in Google Cloud.

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

Enable line charts in dashbaord panels and embedded charts

Closes #66073

See merge request gitlab-org/gitlab-ce!31920

One exception: there is an existing MR for the current branch and the
branch is non-default and non-protected.

Extended mock_data for ide/stores to have different types of branches:
default, protected and regular

Cleaned new MR checkbox view

Add `searchBy` helper & `SidebarItemEpicsSelect` placeholder component

See merge request gitlab-org/gitlab-ce!31859