migration file rectified to work for mysql2 gem.
fixing the build. the problem was that we were using explicit dates.
Add the commands gem
Updated the schema with the organizations table removed
UI: improvements to build page
UI: Publish
UI: Publish
Add a Category model

A category has many categories, and has many questions.
A category belongs to a survey
Show a (placeholder) category view dummy template when its added.
Show a (placeholder) settings pane view when clickign the dummy view
Added templates for category.
Deleting a category deletes all of its questions/categories
Omit some non-mass-assignable attrs from a category model
Get category questions orderable. Also preload them
Remove an extra puts from CategoryController
Allow deletion of a category
Show a category's sub-questions. Can't add them from the UI for now
Show the correct settings when clicking on a category's sub-question
Save a category's sub-questions