Update title for browsabl API to Ansible Tower, return dated version for development/nightly builds.

awx/main/utils.py

@@ -83,7 +83,7 @@ def get_awx_version():
     from awx import __version__
     try:
         import pkg_resources
-        return pkg_resources.require('awx')[0].version
+        return pkg_resources.require('ansible_tower')[0].version
     except:
         return __version__