a teacher can access grades of his own subjects, even no edit_students_grades right is set
can see assigned subjects on a teacher profile
fix deployment script: datamodel changes
fix migration script of version 0.0.24
backup recovering re-create from scratch database of non-local domain, then synchronization will do...
fix filters on DataDisplay: separate from buildSQL, as we cannot apply filters DataDisplay by DataDisplay, but it must be done filter by filter, else Or conditions won't be possible...
fix deployment script
remove few memory leaks in calendar