Added task manager that responds to tasks mentioned in SVN logs.

The task manager doesn't do anything yet, it just logs the fact that a
task has been mentioned.

attract_server/__init__.py

@@ -1,12 +1,16 @@
 from pillar.extension import PillarExtension
 
 from .modules import blueprint
+from . import task_manager
 
 
 class AttractExtension(PillarExtension):
+    def __init__(self):
+        self.task_manager = task_manager.TaskManager()
+
     @property
     def name(self):
-        return 'Attract'
+        return 'attract'
 
     def flask_config(self):
         """Returns extension-specific defaults for the Flask configuration.
@@ -52,3 +56,10 @@ class AttractExtension(PillarExtension):
         :rtype: list of flask.Blueprint objects.
         """
         return [blueprint]
+
+    def setup_app(self, app):
+        """Connects Blinker signals."""
+
+        from . import subversion
+
+        subversion.task_logged.connect(self.task_manager.task_logged_in_svn)