Refactor icon/pixbuf handling
See the commit messages.
This branch is based on top of !636 (merged) because it touches some of the same code.
It doesn’t make any UI or translatable string changes.
Closes #1147 (closed)
See the commit messages.
This branch is based on top of !636 (merged) because it touches some of the same code.
It doesn’t make any UI or translatable string changes.
Closes #1147 (closed)