Added per app version display tag

apps/common/templatetags/version_tags.py

@@ -0,0 +1,13 @@
+from django.template import Library
+from django.utils.importlib import import_module
+
+register = Library()
+
+
+@register.simple_tag
+def app_version(app_name):
+    try:
+        app = import_module(app_name)
+        return app.get_version()
+    except ImportError:
+        return u''