Added Create Account Page

Added Files:
CreateAccountActivity.java - contains the page for creating an account. moved the code for creating an account to the server from MainActivity to this class. Taylor, let me know if that will work. I didn't delete the original code but rather commented it out just in case.

The layout files for CreateAccountActivity.java

Modified Files:
MainActivity.java - changed around the buttons so that clicking "Create Account" will go to the CreateAccountActivity page. Also commented out and moved code related to creating an account to the CreateAccountActivity.java

strings.xml - added some strings

Submitted by: Brandon