Adding Minneapolis 2014.

Added to upcoming events list; re-alphabetized list.

Added to Google map.

We're shooting for July but don't want to promise specific dates until we lock a venue down. Listed as Minneapolis location TBD, summer 2014.

Started from 2013-template but clarified wording and fixed typos in places.
Went with a non-specific (for now) sponsorship page copied from 2014-pittsburgh. Deleted all the sponsor logos.

Updated all the supporting _*.txt files with correct email addresses, names, etc.

Not opening the CFP right away. (Figured we want the email address set up first.)

Tested in webby locally; looks okay to me.