repair broken db queries, fixes #3695

git-svn-id: svn://develop.studip.de/studip/trunk@27601 c5b85792-5220-0410-ad23-ed5b6b8ad999
refs #3693, fix the source of the problem as well instead of healing the symptoms only (which is not bad anyway)

git-svn-id: svn://develop.studip.de/studip/trunk@27602 c5b85792-5220-0410-ad23-ed5b6b8ad999
fixes #3485 extern pages now use visibility

git-svn-id: svn://develop.studip.de/studip/trunk@27607 c5b85792-5220-0410-ad23-ed5b6b8ad999
fixes #3485 bugfix visibility extern pages

git-svn-id: svn://develop.studip.de/studip/trunk@27608 c5b85792-5220-0410-ad23-ed5b6b8ad999
fix link creation, fixes #3451

git-svn-id: svn://develop.studip.de/studip/trunk@27609 c5b85792-5220-0410-ad23-ed5b6b8ad999
closes #3697

git-svn-id: svn://develop.studip.de/studip/trunk@27610 c5b85792-5220-0410-ad23-ed5b6b8ad999
fixes #3697

git-svn-id: svn://develop.studip.de/studip/trunk@27611 c5b85792-5220-0410-ad23-ed5b6b8ad999
fixes #3697

git-svn-id: svn://develop.studip.de/studip/trunk@27612 c5b85792-5220-0410-ad23-ed5b6b8ad999
footer is no longer overlapped by bogus element, fixes #3698

git-svn-id: svn://develop.studip.de/studip/trunk@27613 c5b85792-5220-0410-ad23-ed5b6b8ad999
add first dates, #fix3701

git-svn-id: svn://develop.studip.de/studip/trunk@27615 c5b85792-5220-0410-ad23-ed5b6b8ad999
forum: cache visit dates by seminar AND user, fixes #3696

git-svn-id: svn://develop.studip.de/studip/trunk@27616 c5b85792-5220-0410-ad23-ed5b6b8ad999
relocate and reshape cancel link, fixes #3577

git-svn-id: svn://develop.studip.de/studip/trunk@27617 c5b85792-5220-0410-ad23-ed5b6b8ad999
re #3588 security fix, formats fix, added timetable export element

git-svn-id: svn://develop.studip.de/studip/trunk@27619 c5b85792-5220-0410-ad23-ed5b6b8ad999
re #3588 security fix, formats fix, added timetable export element

git-svn-id: svn://develop.studip.de/studip/trunk@27620 c5b85792-5220-0410-ad23-ed5b6b8ad999
fixes #3703

git-svn-id: svn://develop.studip.de/studip/trunk@27631 c5b85792-5220-0410-ad23-ed5b6b8ad999
refs #3705 : do not allow creation of course in empty coursecategories

git-svn-id: svn://develop.studip.de/studip/trunk@27633 c5b85792-5220-0410-ad23-ed5b6b8ad999
fixes #3705

git-svn-id: svn://develop.studip.de/studip/trunk@27634 c5b85792-5220-0410-ad23-ed5b6b8ad999
fixes #3706

git-svn-id: svn://develop.studip.de/studip/trunk@27635 c5b85792-5220-0410-ad23-ed5b6b8ad999
re #3706 : fixing nonmandatory cor-modules in another slot.

git-svn-id: svn://develop.studip.de/studip/trunk@27638 c5b85792-5220-0410-ad23-ed5b6b8ad999
re #3709 add Navigation::hasItem

git-svn-id: svn://develop.studip.de/studip/trunk@27643 c5b85792-5220-0410-ad23-ed5b6b8ad999