Merge branch 'release/2.1.5' into develop
Bumped version for development after release.
Bug fix: Closes #374
- the execution year can be empty too
Merge branch 'develop' of github.com:ist-dsi/fenix into develop
Enhancement: Closes #378

- added missing fields and corrected the calculation of the the
curricular year, now passing the execution year selected and not
assuming the current one
Reviewd calculation of grade for sorting candidates. Added more information to exported reports. Fixed multiple issues regarding data cleanup.
Bug Fix: Filter units by criteria before limmiting the result set. Closes #379
Bumped version for release of 2.1.6
Merge branch 'release/2.1.6'