Minor change: removed the addition of one day to the stateDate, if it's
on the same the execution semester starts it can not have an added day

Adding auxiliary scripts to report unconfirmed grades and courses
without marksheets; and to report how much students and enrolments have
been made in the present semester
Bumped version for release of 1.3.1
Merge branch 'release/1.3.1' into develop
Bumped version for development after release.