corrected space issues

src/python/dm/daq_web_service/service/experimentSessionController.py

@@ -20,13 +20,13 @@ class ExperimentSessionController(DmSessionController):
     @DmSessionController.require(DmSessionController.isAdministrator())
     @DmSessionController.execute
     def startDaq(self, **kwargs):
-	experimentName = kwargs.get('experimentName')
-	if experimentName is None or not len(experimentName):
-	    raise InvalidRequest('Missing experiment name.')
+        experimentName = kwargs.get('experimentName')
+        if not experimentName:
+            raise InvalidRequest('Missing experiment name.')
         experimentName = Encoder.decode(experimentName)
-	dataDirectory = kwargs.get('dataDirectory')
-	if dataDirectory is None or not len(dataDirectory):
-	    raise InvalidRequest('Missing data directory.')
+        dataDirectory = kwargs.get('dataDirectory')
+        if not dataDirectory:
+            raise InvalidRequest('Missing data directory.')
         dataDirectory = Encoder.decode(dataDirectory)
         daqInfo = {}
         encodedDaqInfo = kwargs.get('daqInfo')