Initialized categories to an empty array.
Can select Categories in chirp creation, no save
Fixed bugs and added initial preprocessing.

I still need to add a file of stop words to the app and retrieve the
list of stop words from there. Currently I have a small array of stop
words.
Search...WORKS!
Completed search functionality.

There are still a few tweaks that need to be done. For instance, UP
navigation for the chirp details from the search results needs to be
done correctly. Also, the stop words for the pre-processing need to be
loaded in from a file of a bunch of stop words later, instead of the
3-4 that I have in an array.
Merge pull request #8 from ghostling/Search

Search
Continue to add categories
small fix
OK, Buttons removed for now
Categories now work with minimal navigation drawer

Also fixed buy on changed rotation of phone
Merge remote-tracking branch 'origin/master'

Conflicts:
	app/src/main/java/cs121/jam/chirps/ChirpSubmissionActivity.java
	app/src/main/res/values/strings.xml
Fixed some bugs and back activity problem
Chirp Submission finishes instead of new intent
User Profile now in reusable fragment