Update maker-faire-forms.php

Auto-Responder Updated: 
1) Receipt of Application - Performer: Removed text about updating application.
2) Receipt of Application - Maker Exhibit: Added text that application deadline has passed. Included info about applying late and other ways to participate.
Merge branch 'master' of https://github.com/Make-Magazine/makerfaire
Update maker-faire-forms.php

Auto-Responder Update: 
- Changed incorrect Google+ URL
- Shortened text from last update to improve look/spacing.
Merge branch 'master' of https://github.com/Make-Magazine/makerfaire