Create alert dialogs and user and password empty spaces validation in login.
Partial support for QR Codes, It reads It!!!! :) :) :) :). tested in a blank activity but the url it's clear.
Complete QR with web view and close button 100% functional
Merge branch 'notiticas-tendencias' into facebook-connect

Conflicts:
	Logyca/AndroidManifest.xml
	Logyca/res/layout/fragment_qrreader.xml
	Logyca/res/values/strings.xml
	Logyca/src/com/logyca/LoginActivity.java
	Logyca/src/com/logyca/MainActivity.java
	Logyca/src/com/logyca/NavigationDrawerFragment.java
	Logyca/src/com/logyca/QRReaderActivity.java
Conflict resolved
Resolve files merge diff ands some minor changes to the menu.