Fixed image gallery filesize warning #2869

There were 2 file size validators present.  The first printed a warning, but didn't validate.  The second wasn't available for a warning, but did validate.  I updated the first to show the smaller of the two filesizes (the default php_max_upload or the field's 6mb).
Add example items to CSV template files.
Fix comments.
WIP
Make it.
Create os_get_content_types_per_app() and use it when executing os_get_bundles().
Separate into OS applications, and include app name.
WIP, workaround to execute code before toolbar.module, to set default.
Merge branch 'SCHOLAR-3.x' into 4917
Remove cp_toolbar.
Docs.
Bring back os_get_bundles() as it was.
Simplify.
Utility function.
Fix titles.
SImplify.
Sort properly.
Simplify.
Arrange.
Names.