Project: Switch to full app paths

Instead of inserting the path of the apps into the Python app,
the apps are now referenced by their full import path.

This app name claves with external or native Python libraries.
Example: Mayan statistics app vs. Python new statistics library.

Every app reference is now prepended with 'mayan.apps'.

Existing config.yml files need to be updated manually.

Signed-off-by: Roberto Rosario <roberto.rosario.gonzalez@gmail.com>

mayan/apps/authentication/forms.py

@@ -7,7 +7,7 @@ from django.contrib.auth import authenticate
 from django.contrib.auth.forms import AuthenticationForm
 from django.utils.translation import ugettext_lazy as _
 
-from common.widgets import EmailInput
+from mayan.apps.common.widgets import EmailInput
 
 
 class EmailAuthenticationForm(forms.Form):