## Issue
5130: Support mailto hyperlinks / urls in markdown
## Change
The markdown components already support mailto, just that the logic here ended up making it a 'ClaimLink'
## Issue
5090: When sorting channels, switching between Trending/Top/New returns viewer to the top of the page
## Approach
- Add an optional parameter to `ClaimListDiscover/Header` to add an additional anchor ID when building a new search URL.
- Clients then add the anchor ID on the desired location.
- The code that handles the scrolling then checks if the `location` contains an anchor hash. If it does, we'll scroll to that element; else, the existing behavior will be used.
## Issues
(1) 4783: New search query does not reset to the top
(2) The current way that Tag Search resets the position can be overridden by the AppRouter's call.
## Approach
Listen to `search` changes as well. This basically covers any search param changes.
Components should probably not call `window.scrollTo` directly as the AppRouter's call might override it.
The only downside to this new implementation is that the top-most (or right-most?) scrollbar won't get the customization. Any other sub-components (e.g. sidebar) will get the customization.
My guess is that the "top-most" scrollbar is above the `main-wrapper`. I'm not sure if we can (or should) add another className higher than App.
The impetus for the customization was the ugly sidebar anyway, so at least we covered that.
4913: Can't slide volume slider in pop out mode
I first tried to handle this at the floating player level, but it was impossible to hack there due to how 'react-draggable' works (it already moved the window before the "move" handler is called, so we can't do much).
Fix by overriding the dragging behavior of the videojs' VolumeBar class by not propagating the event further. It is odd that videojs didn't already do this, since it's SeekBar does stop the propagation.
