* [Client] Moved pages in subtree of rft/, allowing controllers next to them.
* [Client] Created questions page, gives overview and allows adding.
* [Client] Page controllers inherit from _Page, because the previous mechanism wasn't working.
* [Client] Added new user registration.
* [Server] Changed user passwords to passwordHash/passwordSalt combination.
* [Server] Added simple object marshalling and unmarshalling to preserve types.
* [Server] Added ResearchToolObjectInterface with static create() method. Implemented for all model classes.