Merge pull request #454 from diutsu/develop

Removes funcionality from academic admin office
added information to an error message
Merge pull request #456 from cbartol/ticket/rt-#387113

Added information to an error message saying that the error can occur when the discipline, which is being replaced, was already approved.
close #455
Added inquiery responses from person that submits the letter of recommendation.
Allow download of all documents associated with the process in a single zip file.
Bumped version for release of 2.1.19
Merge branch 'release/2.1.19' into develop
Bumped version for development after release.
Fixed retrieval of delegate functions when user had multiple functions durring a year some of which are no longer active.
Avoid NullPointerException.
Make text more comprehensive.
Don't filter candidacies that have not been validated by the candidates.
Bumped version for release of 2.1.20
Merge branch 'release/2.1.20' into develop
Bumped version for development after release.
Adds interface to create emptyDegree on associated objects