Modx 2.3 Compatibility Fix

The album page was not working properly in 2.3.  These changes fix the
errors.  ItemSelector and listeners added.  There were new css classes
in the 2.3 media manager, so they were added here, but the old classes
retained for backwards compatibility (modx-pb-thumb css from 2.2.14 is
not needed with these classes added).  PhpThumb was not working in 2.3,
so 2.3.1 is needed for this to work.  The controller file seems to be
working in the front and back end without changes now that this js file
has been updated.  The only thing I could not find was the way to change
the default height for gallery.backend_thumb_height through the code.  I
went into system settings and manually updated this to 80 for 2.3.
Again, not sure what the proper way is to include that change through
the package manager updates.
Revert "Modx 2.3 Compatibility Fix"

This reverts commit bd22d70b804ef474a8bee7d15ba04d99ce768d88.
Modx 2.3 Compatibility Fix

The album page was not working properly in 2.3.  These changes fix the
errors.  ItemSelector and listeners added.  There were new css classes
in the 2.3 media manager, so they were added here, but the old classes
retained for backwards compatibility (modx-pb-thumb css from 2.2.14 is
not needed with these classes added).  PhpThumb was not working in 2.3,
so 2.3.1 is needed for this to work.  The controller file seems to be
working in the front and back end without changes now that this js file
has been updated.  The only thing I could not find was the way to change
the default height for gallery.backend_thumb_height through the code.  I
went into system settings and manually updated this to 80 for 2.3.
Again, not sure what the proper way is to include that change through
the package manager updates.
Backend Thumb Height for Modx 2.3

Height changed in 2.3 media manager.
Restored exact height of update window

"Auto" height did not work for some users.  The window was way too
short, so exact height was restored.
Modx 2.3 Compatibility Fixes

* origin/pr/39:
  Restored exact height of update window
  Backend Thumb Height for Modx 2.3
  Modx 2.3 Compatibility Fix
  Revert "Modx 2.3 Compatibility Fix"
  Modx 2.3 Compatibility Fix