Tons of changes

Working on conformation mechanistm -> upload/confirm
MailSender added
Added a simple mail templates in a silly way //TODO refactor...
upload/upload is already sending confirmation emails!
Validate added
No return to upload/upload anymore -> its now upload/success

TODO: Solve:
java.lang.NullPointerException
	com.ultrashare.controller.UploadController.getConfirmationLink(UploadController.java:101)
	com.ultrashare.controller.UploadController.upload(UploadController.java:52)