Reveal cropped portions of content while post is under mouse pointer.
- un-crops and resizes hovered images in timeline to be entirely visible
- zooms profile pictures in hover popups
- 2020-06-30 - more non-contrasting text prevention
- 2020-06-17 - more avatar fixup, in notifications
- 2020-06-14 - hotfix for avatars in timeline
- 2020-05-27 - fix "scope" (again?)
- 2020-05-18 - fix avatar zoom in hover popup (again)