Todo
====

 * Check that question codes are unique.
   Are we going to create the node server for this?
   This will allow auth, more rest-like search, server side validation
 * Check that answers are saved correctly.
   Answers to multi-item questions (like scales) are stored in an object
   now with index as keys. This is not symmetrical with the fact that the
   configuration is an array.
 * Export answers for a survey run
 * Revive json schema checks for our data.
   Questions don't pass the schema at the moment.
 * Fragile: widget creation relies on the names in Factory, but these
   must match the types returned by the actual widgets. Fix this.
 * Write a spec for the codes.
 * Don't allow Save in Question unless all question items are done editing.
 * Use node as a server, adopt the layout described in
   http://dojotoolkit.org/documentation/tutorials/1.8/node/
   This will require quite a lot of moving and creating a rest interface
   -> can be just a proxy to CouchDB in he beginning.

Checklist
=========

 * Form validation (use tooltips!)
 * Input validation & escaping
   - E.g. texts and labels of ScaleWidget are directly put in innerHTML, I don't think TextBox does any escaping.
 * Output escaping
 * Widget life-cycle
   buildRendering -> widgets in code before set attributes
   postCreate -> after all inits, but before in DOM
   startup -> after insertion in DOM?
 * Review current JSON formats, do they allow for extension or extra meta-data?
 
Open issues
===========

 * Do different inputs in one question get different codes? E.g. in 
   To ease exporting into other programs and easy communication, the codes
   are important I think. It should be easy to pronounce, and easy to
   find in the tool (people might get a dataset and not know where it
   came from).
 * What if a question is included in a survey multiple times. Use block
   or allow a pre/post-fix on the code to differentiate it.
   Should not be too much work, so if an scale with 5 items has 5 codes,
   you should be able to set a prefix on all of them at once.