Set room number to None not empty string

Author: mbillow

.pylintrc

@@ -82,7 +82,7 @@ max-args = 10
 ignored-argument-names = _.*
 max-locals = 20
 max-returns = 6
-max-branches = 13
+max-branches = 15
 max-statements = 55
 max-parents = 7
 max-attributes = 10

conditional/blueprints/member_management.py

@@ -271,7 +271,12 @@ def member_management_edituser(uid):
             post_data['evalDate'], post_data['sigMissed']))
 
         name = post_data['name']
-        room_number = post_data['roomNumber']
+
+        if post_data['roomNumber'] == "":
+            room_number = None
+        else:
+            room_number = post_data['roomNumber']
+
         onfloor_status = post_data['onfloorStatus']
         eval_date = post_data['evalDate']