Separation of UI and services

[Scott Wilson]

One strong message coming back from the event we had this week from
the community was to make sure we have a clear separation between the
Edukapp service layer and (multiple) UIs. For the most part we're
doing this by having most of the UI driven from JSON web services.

However we do still have this "ajaxhandlers" package which is blurring
the line between services and UI and I'd like to eliminate these
completely. So - if the UI needs some sort of functionality, we have
to define a web API for it and add it to the API docs, we can't just
code some JSP and custom queries.

I know it can be a painful constraint, but the system will be much
better if we stick to it :-)