Add a CSV data file containing all University Category terms

Format of each line is:

Level1 Name, level1-slug, Level2 Name, level2-slug, Level3 Name, level3-slug
Add README documentation specific to included data files
Add a helper utility for future exports of taxonomy data
Add a default array of university categories to be enforced
Add a utility function for creating the PHP array used
Force second level children to have empty arrays if they are not parents
Modify the structure of the default category list
Add a header row to the University Category CSV
Add initial logic to enforce the master category list in WordPress

Parses through 3 levels of categories to determine that things are properly configured.
Complete processing for University Category taxonomy

Corrects issues with duplication, adds more documentation throughout.

Also introduces a cache clearing method for both the category and location taxonomies to fire before and after all major updates.
Only grab University locations on demand
Move the locations array method down
Add priorities to our initial actions
Additional documentation and explicit registration of the taxonomies
Inline documentation, remove debug code
We should be ok without the extra error reporting now.
Merge pull request #2 from washingtonstateuniversity/uni-category

[PR] Add University Category handling and data