Refactoring: Removing trailing whitespace, so the following commits are clean of it.
In Admin Preferences, to handle the tag flood: Show tags as searchable list, with filter function for important tags. Prototype.
Merged official/master
Hide tags after the 30th.
Re-enabling editing functions for tags. Moved tag-specific code from editing to admin/prefs, published commonly used code. #39
Merge pull request #41 from mknecht/issue-39

Issue #39: Tag grouping in admin/prefs