Vue-i18n: autofix for app/assets/javascripts/ide directory

See merge request gitlab-org/gitlab-ce!29967

If an entry has been removed from the tree and later, during the same
session, a user is trying to add a new item with the same name/path we
should allow for that as long as the original entry is marked with
`deleted`.

i18n linting for .vue files under the
app/assets/javascripts/ide directory

Fix IDE editor to update dimensions on show change

Closes #45120

See merge request gitlab-org/gitlab-ce!30135

Update window's URL after entry's re-name

Set proper hook for correct fileLanguage

Filtered out `moved` entries from the tree

When removing the last file from a folder in WebIDE, do not remove the
folder from the view. We keep those to give users possibility to
re-upload files to the same folders.

Closes https://gitlab.com/gitlab-org/gitlab-ce/issues/60860

Upgrades prettier to the latest version, and auto-corrects files with
yarn prettier-all-save

The diffs all seem to stem from formatting changes in brackets within
template literals. Nothing major.

Relevant changelogs here:

https://prettier.io/blog/2019/04/12/1.17.0.html
https://prettier.io/blog/2019/06/06/1.18.0.html

**Why?**
The branch HEAD could be changed since the
IDE was opened. This leads to user's unintentionally
creating commits that overwrite other changes.

https://gitlab.com/gitlab-org/gitlab-ce/issues/59023

**Why?**
The ide_status_list will be used and extended in EE.