Modify UI to be consistent with iphone/ipad, add more features related to navigation

This feature accomplishes:

1) On iPhone we now have access to Guides/More-info/Answers while drilling down categories. A new "Guides" section will pop up in the tableview if there are guides for a given category you are currently looking at.

2) Moved Favorites button to top right of view

3) On iPad: While the user is drilling down categories, we update the right hand side of the split view controller based on a priority system:
1) Guides are most important, show this first if available.
2) Answers is second important, show this if Guides aren't available
3) More info is the least important, show if Guides/Answers isn't available.

4) We now use the content section of a categories wiki by grabbing it from the API and applying local custom CSS.

5) Moved a couple classes to deprecated folder as we no longer need to use them with this new functionality.


TODO:
1) Finalize the CSS for iPad/iPhone
2) Find bugs
3) Rebase once this pull is ready before merging