- prevents menu to hide underlying text
- prevents `chat-message-actions` to close when hovering dropdown of 3
dots button as mouse would hover an other message due to the small space
between `chat-message-actions` menu and the dropdown of the 3 dots
button
<!-- NOTE: All pull requests should have tests (rspec in Ruby, qunit in
JavaScript). If your code does not include test coverage, please include
an explanation of why it was omitted. -->
- Note this is also tweaking the UI a little bit as we are now using links/buttons in the header as needed
- It disables the find ideal channel in drawer mode, if loading `/chat` in drawer mode it will either reopen at the last position or just stay on index
- allows to scroll while hovering the menu
- correctly changes message background color while hovering menu
- prevents a bug where it would sometimes close the menu while moving from menu to the 3 dots expanded dropdown. This was caused by the gap between header/body of the 3 dots dropdown, which would sometimes allow to create a mouseover event on a possible different underlying message
- removes recent/favorite reactions on drawer mode
- grayscale reactions until hover
- boxshadow on msgactions container
- removes useless code
