BORKEN: authentication via POST
somewhat working code
working
Crusade against single sign on
FIXED: Crusade against single sign on
Enable CAS Single Sign-On

Still needs fixing:
  * A PortletWebViewActivity may need to be started twice in a row for
    the authenticated status to occur
  * Remember Me does not persist the SSO status on startup
  * Log Out button does nothing?
Move CAS authentication code out of the login activity
Move hard-coded URLs to string resources
Parse post data in its own method
Retrieve ST location in its own method
Retrieve ST in its own method
Validate ST in its own method
Clean up getQuery()
Remove log statements
Finish refactoring authenticate()
Merge branch 'refactor-authenticate' into workingpost
Remove cookie persistence from the App object
Revert "Remove log statements"

Apparently this broke the ability to retrieve a logged-in JSON feed???

This reverts commit 03af932a5dd3b64e2ed8d2b0f834f556c6fdffb6.

Conflicts:
	app/src/main/java/org/apereo/utils/CasClient.java
Remove log statements The Right Way™

Apparently, .connect() is a no-op unless another method involving that
connection is called.
Optimize imports