! Display max avatar size for size-limited avatars. Fixes #1287

Signed-off-by: Peter Spicer <sleeping@myperch.org>
! Enforce limits on maximum days/weeks/months/years for subscription lengths in line with what PayPal requires. Fixes #1274

Signed-off-by: Peter Spicer <sleeping@myperch.org>
Merge pull request #1293 from Arantor/release-2.1

Some more fixed things