Cambios para hacer commit:
	modificado: src/com/iesebre/dam2/pa201415/ivan/androidskeleton/LoginActivity.java
	modificado: src/com/iesebre/dam2/pa201415/ivan/androidskeleton/MainActivityDrawer.java

FUCKING HOSTILE!!
IT WORK'S
Revoke button for 3 social networks working fine, and progress
dialog just for twiiter and google+. Facebook have his own one.

need to deactivate drawer menu.. tomorrow