set version 1.1.0-SNAPSTHOT for master
upgrade javascript/css dependencies

- bootstrap 2.2.1 -> 2.3.0
- jquery 1.8.2 -> 1.9.1
- codemirror 2.34 -> 3.02
- mustache 0.7.1 -> 0.7.2
- fileupload plugin
- jquery.forms plugin
upgrade scalate version 1.5.6->1.6.1; commons codec to 1.7
makes blacklist hostnames re-resolve interval configurable
configure default MailSender via jmx

bind SessionFactory in guice. log warning if invisible form field was
filled by client.