Portal Login Helper for NJU

Oct 9, 2016

3.3.1
* Add support for HTC devices;
* Misc bugfixes;
* Remove sensitive information from logcat.

3.3.0
* Add login dialog for conflicting online devices;
* Remove operation code in toasts;
* Fix quick login/logout brings out main activity;
* Various bugfixes.

3.2.2
* Update with latest portal changes;
* Refine balance alert;
* Remove experimental relogin support;
* Bugfixes.