Deletes unused CSS
Moves prometheus selectors into a prometheus file

Safari on iOS sort of figures out the right thing here, but other
browsers need a specific touch to be referenced.

This makes it work on Chrome and Firefox on Android, as well as
Chrome DevTools mobile device view.

Move cluster applications manager tests from karma to jest. Fixes
some migration issues related with timeouts, and HTTP request
expectations.

Makes changes for truncation and combines the two related CSS classes.
Applies new tooltip comp as close as possible to the span for testing.

Resolves an issue where long series label names overflow
the popover chart tooltip container

Adding support for metrics alerts disabled multiple query support.
To avoid a data model refactor, this enables the visual of multiple
queries per chart on the front end, combining queries based on
metric group, title, and y-axis label.

This also adds support for adding and editing alerts based on the
query selected rather than the single metric associated with the chart.

if there isn’t an ingress IP assigned for the cluster yet

This MR rewrites existing Related Merge Requests widget
with Vue with reusing shared Related Issues components

- Compare versions header is full width except in the unified diff mode
with no tree sidebar
  - Bar is always full width, but the content within stays centered when
unified and no tree sidebar
- File header is the same height as the "Compare versions header"
- aligns with the design system grid guidelines => 56px
- Diff file headers use a button group, switch icon order to open file
externally being the last option, all buttons will become icon buttons
(icon delivery by @dimitrieh)
- If a file header becomes sticky no rounded corner/double border
problem is visible anymore

Corrects an issue whereby queries which return multiple series results
were not rendering as multiple data series on the metrics dashboard

Signed-off-by: NDmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

(cherry picked from commit a4d0b2435ff132da9bb238fea95672a6ddfd084d)

**Why?**
Currently the IDE loads a merge request based on only the
`source_branch` name. This means it loads MR's from
forks that have the same branch name (not good).

- This required updating the BE API to accept `source_project_id`

* Fix up graph resize logic if navbar is collapsed

Add snapshot

Changes in EE involving ability to size MR widget icons.
Also changing loading icon to medium size.

Also added a finally clause to the getGraphsDataWithTime promise

In order for the dashboard component not to fail, the feature flag
is now required by default

Updated i18n strings and changed the
monitoring service graph data params

Also added relevant tests that make use of a stubbed feature flag,
prettified files

Added the logic to allow the start and end dates to be created

The performance dashboards will now display the data
from a set amount of time windows that are defined
on a constants file

**Why?**

Previously it managed this as an internal data property, but there
was extra complexity involved because the component doesn't have
all the information it needs (i.e. the `mouseOver` prop).

This is a good opportunity to colocate the data prop with the component
that has the information to change it (i.e. `file_row`) and let
`new_dropdown/index` receive this value as a prop.

Before the user had to choose between committing to a new branch,
committing to a new branch AND creating an MR, or committing to the
current branch regardless of whether or not it already has an MR.

This commit separates the creation of an MR from whether or not they
commit to an existing or new branch

**What?**

A Vue warning that `ide_status_bar` sent a `Boolean` to a `String`
property (`img-src).

**What was the fix?**

Previously, `latestPipeline` could be one of the following values:

|          |        |
|----------|--------|
| `null`   | The pipeline hasn't loaded yet |
| `false`  | The pipeline has loaded, but nothing was returned. |
| `Object` | The piepline has loaded. |

Giving a semantic meaning to different falsey values hurts
maintainability. This commit fixes the above problem by removing the
`false` value and introducing a `hasLoadedPipeline` state property.

- added suggestions to mock data
- fixed props to be not required

Since we can create files from URL now, this means that these files will
not exist in the tree returned from API: they exist on the client
only before the first commit. In order to still show the newly-created
files in the tree, we should not override the tree, but merge the tree
existing on the client and the one coming from API.

Changelog entry

Moved trees merging into mutation

Scoped labels in EE require additional changes in CE code.

Localized the notifications dropdown string

Fixes https://gitlab.com/gitlab-org/gitlab-ce/issues/59942

Merge branch 'feature/webide_escaping' of gitlab.com:hiddentiger/gitlab-ce into feature/webide_escaping

Adds optional paramters to the constructor to allow
reuse of the timezone dropdown on other pages

Refactor tests to follow conventions
Add XSS test
Eliminate a few unnecessary lines, comments, and parameters
Use Vue.set for nested state changes