Fix for issue 3754

Associations weren't working for tags with brackets in them
https://code.google.com/p/otwarchive/issues/detail?id=3754

Signed-off-by: shalott <shalott@gmail.com>
3763 Bookmarks give 404 after first page of filtered results
Merge pull request #1333 from shalott/tagset_brackets_fix

Fix for issue 3754
Merge pull request #1334 from sarken/issue_3763

3763 Bookmarks for tags with / give 404 after first page of filtered results