Added webpage to contribute PublicMementos (with alfa support of
contributing to an specific context)
fixed logout button bugs
Merge branch 'dev' of https://github.com/cdparra/reminiscens-lifeapi.git
into dev

Conflicts:
	app/controllers/ContextControl.java
	app/delegates/ContextDelegate.java
	app/views/main.scala.html
	app/views/uploadpublicmemento.scala.html
	conf/routes
	public/javascripts/app.js