Need to make categories, subcategories

[epicfaace]

Go to http://outplayedapps.com/tycho/ , go to the database manager (password is same as db password). Need to add the categories & subcategories as per what we planned.

I made it so study guides can be in either a category OR a subcategory. For example, the Bio primer won't be in its own subcategory -- it will be in just the "science" category.