Fixes #13814

Also removed the cloning of forms for note edits. Instead it just hides/shows the form seeing as it is already there

Closes #14094

Unified the 'edited text' to be the same in descriptions and comments

Closes #5538

Also changed the labels on the buttons to better match the action they are completing.

Closes #8057

A file called notes is loaded every ~15 seconds which checks for
updates to content on the page. This commit increases the polling
timeout over time (15, 30, 60, 120 seconds) and resets
it to 15 seconds if the AJAX call returns new notes

Fixes issue #13300

Closes #5534

Triggers jQuery event
Fixes #5544

[ci skip]

- Replace 'rel' attributes with 'data' or 'id' attributes
- Style jQuery methods chaining according to Jacob's guidelines
- Rename a method

This commits also fixes two minor issues:
- Ensure notes that the current user is not allowed to see are not
  returned in the AJAX notes loading
- Ensure the notes counter badge is decremented of 1 instead of 2

[ci skip]

Elements searched for by jQuery no longer existed in the DOM.
Javascript was also unnecessarily complex, for using jQuery
Fixes #8109

This adds a new feature to `Flash` that allows to pin it after a
specified selector. This removes a fixed position from such award-emoji
alert, and makes it responsive by design of selector that this alert is
pinned to.

Closes #3996

Make sure we wait for AJAX request to finish before end test and cleanup
database
Signed-off-by: NDmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

[ci skip]

This makes it more intuitive, as user can see that something actually
happened after adding emoji-only comment in long discussions.