[OzzModz] Avatar Gallery 2.0.2 Patch Level 4

Fix: avoid "Call to a member function getAvatarUrl() on null" errors
Fix: reset user avatars after deleting an avatar from the gallery

Fix: Avatar from the gallery is not reset when uploading new custom avatar

Fix: missing avatar export template

Fix: remove XF 2.2+ template tag

PS: This will be the last version that supports XF 2.1.x

• Added style properties to make avatar or/and category container scrollable
• Added search filter in ACP avatar list

2.0.1:

• Avatar categories now collapsible
• Category container now can be clipped with scrollbar
• Added avatar data export
• Added checkboxes in ACP avatar list for batch actions (delete/export)
• Fixed incorrect relation condition column in AvatarCategory entity
• Fix: display ungrouped avatars in ACP avatar list (are not deleted when deleting a category and were not displayed anywhere)