ApplicationKey via Proxy

Create a proxy filter to add applicationKey transparently to requests.
All REST request made though the proxy will automatically get the
application key.

Also this proxy will probably solve any CORS problems.
config servlet

Allows to upload application keys for accessing the REST Server.
include julians pull request (but not login.html)
accept CreativeDreams changes
accept CreativeDreams changes
bsmcommons 0.1
fix KeyStore caching
Merge pull request #3 from xlvii-sven/master

fix KeyStore caching (Thank you!)
Merge remote-tracking branch 'upstream/master'

Conflicts:
	src/main/webapp/css/plugins-styles/plugins-styles.css
	src/main/webapp/js/app/app.js
	src/main/webapp/js/scripts.js
	src/main/webapp/templates/add_page.html