Added basics for tag searching

Can't test it without some basic tags first, so I'm going to see how
tilson had set that up. Looks like a post to Details right now.
Tweaked /Details more, added Tracelines
Fixed _Layout links, added to /tagSearch, commented out busted tag work in Details
Removed dead code in /Details and removed ref to AdminMenu.cshtml
Moved SortedDict creation to Tools, copied it for Tags and Genres

Tweaked Results.cshtml title, added _FilterMenu a new line for tag
searching. About to combine that second search with the one for movies.
Commented out a bit of /Index stuff,

In the interest of extracting the search logic later on
Tag filter changed to a dropbox only, centered it