feature request #322978,#390952 by chaps2: Tag by clicking on existing tags and dynamic update of all tags list

- #137421: Fix community tags destroying tags created before install (run update.php) and terms in other vocabularies.
- #137424: Play nice with devel.module output for JS callback.
- #139053: Show login link if you have no tagging permissions.
- Clean up some strings

- Fix deleting of own tags from the community tag form.
- Refactored the display / node type settings. Choose per node type where to display the tagging form (block, inline, tab)
- Multiple community tagged vocabularies partially supported (only on non-overlapping node types).
- Pretty, asynchronous ajax tagger. i.e. type tag, hit enter, type another tag, hit enter - without waiting for any step to complete. Click tag to delete.

http://acko.net/dumpx/community-tagging.mov

#90456: Remove anonymous user support -- we can always add this back in at some point, but for now it's simpler without it