Added a bunch of bug fixes. Improved handling of tags and cats
Added a MySQL schema change where the com_wordbridge_post_categories
table has a category_seq field in order to preserve the order in
which categories and tags attached to a post should appear in an
effort to separate Categories and Tags.
Tag names filtered out all but lowercase letters and numbers, added
upper case A-Z to the regular expression.
Handling of some tags and categories whose WordPress URLs end in -2
to avoid naming collisions with categories with the same name.