Fixed avatar not showing in some cases.
Fixed avatars does not show in users from old add-on
Fixed job rebuild user cache not work as expected.
Added new tools rebuild to rebuild user avatars. This rebuild also have option to apply to users did not have custom avatar.
Notes: From users upgrade this add-on from XenForo 1.x version. You may run above tools unless you will loss the user avatar cause that add-on not compatible with previous one.