Better symbolic icons

A lot of the old symbolic icons were not very geometric and off
the 16x16 grid. This brings them in line with the GNOME style for
symbolic icons and aligns them to the pixel grid where possible.
5 jobs for refresh-symbolics in 32 minutes and 2 seconds (queued for 2 seconds)
latest
Status Job ID Name Coverage
  Build
passed #262677
fedora

00:14:45

passed #262678
ubuntu

00:16:24

 
  Test
passed #262679
flatpak

00:14:54

 
  Deploy
passed #262680
review

00:00:43

manual #262681
allowed to fail manual
stop_review