Fixes https://github.com/vector-im/riot-web/issues/10554
Issues fixed:
* Fields were not ~30px from the avatar (too much right margin)
* Tooltips overflowed the dialog on some resolutions
* SetIdServer didn't have an error state for making the field red
* Spacing between sections in Discovery was wrong (fixed by just removing the problematic n+2 selector - it didn't help anything)
This makes a few small tweaks to Settings padding and margin, but more is still
needed. I am told that https://github.com/vector-im/riot-web/issues/10554 will
soon take a holistic view on the problem, so this is a more conservation
temporary change.
Also bring in the compact timeline option.
Without minor CSS changes, the old user settings are completely unusable with this change. As such, minimal effort has been put in to have it be useful. Similarly, the changes drop the use of radio groups and the old theme selector was the only one that used it. See the comments for more details on how/why this was mitigated the way it was.
Ben Parsons