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/django_gpg/managers.py

@@ -6,7 +6,7 @@ import os
 
 from django.db import models
 
-from common.utils import mkstemp
+from mayan.apps.common.utils import mkstemp
 
 from .classes import KeyStub, SignatureVerification
 from .exceptions import (