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