Merge branch 'release/2.1.12' into develop
Bumped version for development after release.
Revert field back to required.
Changing about me
Enhancement: Closes #414
- removed the class that hides the photo when printing
List only parent units that are valid. Closes #415
Bug fix: Closes #416
- it is possible that some courses don't have a context for the specific
period and degree, preventing null pointer and returning appropriate
exception
Bumped version for release of 2.1.13
Merge branch 'release/2.1.13'