Adds custom video.js hls quality selector plugin
This allows the quality selector plugin to stay active and listen for source changes on the player to prevent the need to recreate the player when switching between MP4's and M3U8's
## Issues
5349: Remove theater mode button from player in comments
5519: Theatre mode button doesn't do anything in full screen mode [Odysse/LBRY desktop app]
## Notes
5349: Wanted to hide for 'markdown' as well, but it seems useful for 'markdown' (to clear the screen from Related), so I did not include it.
## Issue
Closes 5523: timestamps not interpreted in some cases
## Notes
`remark-breaks` previously kept repeating the same index in the loop, causing some corner-cases to be parsed oddly. I added code to address that.
Later, `remark-breaks` fixed the problem and we recently just bumped up the componnent version. My hack is no longer necesary.
## Issue
2731: Searches with forward slashes returns no results
## Change
The slash-removal came from (0db20834f9).
Removing the 2 `replace(/\//, ' ')` from lbry-desktop fixes it, but this PR assumes the slash-removal is intentional to cover something else. So, we'll make the Search side do the same thing to match what's happening in `doSearch`.
A little bit ugly, but there's already a comment about this in `makeSelectSearchUris`, so it'll probably get cleaned up in the future.
## Issue
Closes#5392 better support for non-standard resolution videos
It's not actually cropped -- the control bar was opaque.
## Change
Use 0.80 opacity to somewhat see the full picture.
Using 0.5 or less would be even better, but due to the default tiny size of the control bar, the text becomes unreadable (it's readable if you zoom the browser to get larger text). Don't want to mess with sizing for now, so using 0.80 to get the best of both worlds.
## Issue
5438: Keep floating player in view area
## Changes
- Restore correct z-index
- The bug came as a side effect of cbac2174. Redo cbac2174 to cover both close button and floating player.
- Remove wobbling when dragging to bottom-right.
- The extra gap introduced is fighting against react-draggable. If gaps are needed, handle it entire ourselves or do it somewhere in react-draggable; neither is worth the effort, so the gap was removed.
