* getOriginal added to Avatar class
This is a static function that retrieves the original avatar in a leaner
way than Profile->getOriginalAvatar() did (see below).
This will throw an Exception if there was none to be found.
* getProfileAvatars added to Avatar class
This gets all Avatars from a profile and returns them in an array.
* newSize added to Avatar class
This will scale an original avatar or throw an Exception (originally from
Avatar::getOriginal) if one wasn't found.
* deleteFromProfile added to Avatar class
Deletes all avatars for a Profile. This makes the code much smarter when
removing all avatars from a user.
Previously only specific, hardcoded (through constants) sizes would be
deleted. If you ever changed lib/framework.php then many oddsized avatars
would remain with the old method.
* Migrated Profile class to new Avatar::getOriginal support
Profile class now uses Avatar::getOriginal through its own
$this->getOriginalAvatar and thus remains backwards compatible.
* Updating stock GNU Social to use Avatar::getOriginal
All places where core StatusNet code used the
$profile->getOriginalAvatar, it will now useAvatar::getOriginal with
proper error handling.
* Updated Profile class to use Avatar::newSize
When doing setOriginal, the scaling will be done with the new method
introduced in this merge.
This also edits the _fillAvatar function to avoid adding NULL values to
the array (which causes errors when attempting to access array entries as
objects). See issue #3478 at http://status.net/open-source/issues/3478
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