! Fix a few errors with upgrade (fixes #2262)

Signed-off-by: Michael Eshom <oldiesmann@oldiesmann.us>
! Try chmod 755 and 775 first...

Signed-off-by: Michael Eshom <oldiesmann@oldiesmann.us>
! Handle stargmod.gif and ignore groups with no icons...

Signed-off-by: Michael Eshom <oldiesmann@oldiesmann.us>
! Tweaks to custom avatar directory handling

Signed-off-by: Michael Eshom <oldiesmann@oldiesmann.us>
Merge pull request #2264 from Oldiesmann/release-2.1

! Upgrade fixes