Panel improvements

- Added progress meter for video and audio media types.
- Changed the __repr__ method of a MediaEntry to display a bit more
  useful explanation.
- Added a new MediaEntry.state, 'processing', which means that the task
  is running the processor on the item currently.
- Fixed some PEP8 issues in user_pages/views.py
- Fixed the ATOM TAG URI to show the correct year.

mediagoblin/db/sql/migrations.py

@@ -14,7 +14,7 @@
 # You should have received a copy of the GNU Affero General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-from sqlalchemy import MetaData, Table, Column, Boolean
+from sqlalchemy import MetaData, Table, Column, Boolean, SmallInteger
 
 from mediagoblin.db.sql.util import RegisterMigration
 
@@ -47,3 +47,15 @@ def add_wants_notification_column(db_conn):
             default=True, nullable=True)
     col.create(users, populate_defaults=True)
     db_conn.commit()
+
+
+@RegisterMigration(3, MIGRATIONS)
+def add_transcoding_progress(db_conn):
+    metadata = MetaData(bind=db_conn.bind)
+
+    media_entry = Table('core__media_entries', metadata, autoload=True,
+            autoload_with=db_conn.bind)
+
+    col = Column('transcoding_progress', SmallInteger)
+    col.create(media_entry)
+    db_conn.commit()

mediagoblin/db/sql/models.py

@@ -107,6 +107,8 @@ class MediaEntry(Base, MediaEntryMixin):
     fail_error = Column(Unicode)
     fail_metadata = Column(JSONEncoded)
 
+    transcoding_progress = Column(SmallInteger)
+
     queued_media_file = Column(PathTupleWithSlashes)
 
     queued_task_id = Column(Unicode)
@@ -209,6 +211,12 @@ class MediaEntry(Base, MediaEntryMixin):
         __import__(models_module)
         return sys.modules[models_module].DATA_MODEL
 
+    def __repr__(self):
+        return '<{classname} {id}: {title}>'.format(
+                classname=self.__class__.__name__,
+                id=self.id,
+                title=self.title)
+
 
 class FileKeynames(Base):
     """