1. Tweak diff header and remove a numbe of unneeded CSS for it:
Before:
<img width="433" alt="Screenshot 2024-02-18 at 01 08 09"
src="d8b377c0-57bc-44d5-bb57-a582c7d4b3b4">
After:
<img width="463" alt="Screenshot 2024-02-18 at 01 07 56"
src="d08c17e7-5b86-4d07-81da-6371f4754325">
3. Reduce height of review textarea and also reduce fomantic's CSS from
12em to 8em. Now fits better on my screen:
<img width="1352" alt="image"
src="5c658d13-295e-4929-94da-13ade888020d">
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Co-authored-by: delvh <dev.lh@web.de>
(cherry picked from commit 39f8ab591c18a65cf783ecd17ddc1a5914ceff7a)
aefc747ccb