Convert GivEnergy timestamps to Localtime

GivEnergy data uses UTC. Check for stale data was comparing UTC timestamp with local time (BST) and reporting an error. This change avoids the error reports for stale data.

palm_utils.py

@@ -135,7 +135,12 @@ def get_latest_data(self):
                     while i < 5:
                         self.sys_status[i] = self.sys_status[0]
                         i += 1
+
                 self.read_time_mins = t_to_mins(self.sys_status[0]['time'][11:])
+                # Check for BST and convert to local time
+                if time.strftime("%z", time.localtime()) == "+0100":
+                    self.read_time_mins = (self.read_time_mins + 60) % 1440
+
                 self.line_voltage = float(self.sys_status[0]['grid']['voltage'])
                 self.grid_power = -1 * int(self.sys_status[0]['grid']['power'])  # -ve = export
                 self.pv_power = int(self.sys_status[0]['solar']['power'])