lims: requests/request_admin controller refactor

A new controller called requests_common now handles all common tasks like create/edit/delete requests & samples. The requests controller has only the grid definition and requests_admin controller has the request_type code and the sequencer data transfer code.
Also fixed a form importer bug in forms.py

scripts/galaxy_messaging/server/data_transfer.py

@@ -194,7 +194,7 @@ class DataTransfer(object):
         Update the data transfer status for this dataset in the database
         '''
         try:
-            log.debug('Setting status "%s" for dataset "%s"' % ( status, str(dataset_index) ) )
+            log.debug('Setting status "%s" for dataset "%s" of sample "%s"' % ( status, str(dataset_index), str(self.sample_id) ) )
             df = from_json_string(self.galaxydb.get_sample_dataset_files(self.sample_id))
             if dataset_index == 'All':
                 for dataset in self.dataset_files:

scripts/galaxy_messaging/server/galaxydb_interface.py

@@ -28,7 +28,7 @@ class GalaxyDbInterface(object):
     def __init__(self, dbstr):
         self.dbstr = dbstr
         self.db_engine = create_engine(self.dbstr)    
-#        self.db_engine.echo = True  
+        self.db_engine.echo = True  
         self.metadata = MetaData(self.db_engine)
         self.session = sessionmaker(bind=self.db_engine)
         self.event_table = Table('sample_event', self.metadata, autoload=True )