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

Checks if key is present before accessing it

Fix broken test

Fix broken test

Transform pipelines table css to match structure of pipelines table
Make environments table overflow

Previously it was listening for focusout, it now listens for blur &
paste events

Closes #28436

Fixed hll overriding is-over class

It now shows the line will be commenting on my highlight the line number cells with a lighter color. The button has also been made smaller, it was previously way over the top & took over a lot more space than it should of done

Closes #27543

Also removed eslint disabled rules

Now it appends a template instead of relying in a partial
to show it.

Also changed the cookie sets to true and false values to make
it consistent with the rest of the javascript.

Fixed some haml and a missing new line

Also improved accesibility and change the id from user_callouts to a class

Also changed the user_callout haml to a partial and
added the corresponding SVG icon