Continue Flask migration.

thermostat.py

@@ -214,6 +214,7 @@ migrate = Migrate(app, db, compare_type=True)
 
 target_name = default_target
 forced_mode = None
+current_time = time.time()
 
 def thermostat_loop():
   start_time = time.time()
@@ -222,6 +223,7 @@ def thermostat_loop():
   first_loop = True
   global target_name
   global forced_mode
+  global current_time
 
   while True:
   #  if stop.is_set():