fixed the bug and action tests
[fixed #73775868] unregistered student records can be viewed
[Fixes #73780788] Tooltip in studentProfilePage for image upload input element
[Fixes #73781522] pictures are deleted even if a post parameter is null
trivial - removed unused import
merged latest rc
[Fixes #73704212] added GCS bucket name to build.properties. Fixed a few test cases for Sections Feature
[Fixes #73786914] help text added so that students know the max upload size
made the upload limit (given to blobstoreAPI) a constant.
All profile related bugs fixed