Back end: Refactorised web requests.
Back end: Refactorised the internal storage classes. Fixes #65.
Back end: Debugging network connection error.
Merge branch 'master' of https://github.com/L6mps/LasaLaraAP into Backend

Conflicts:
	LasaLara/src/com/lasalara/lasalara/activities/MainActivity.java
Back end: Debugging web request error. #50.
Back end: Refactored the database helper class as a singleton. #50
Back end: Threaded web request. #50
Refactored WebRequest to an AsyncTask (more native to Android than threads).
Refactored the Android application structure.