Can't sync google Calendar.

[Boonchai Nookrongsin]

Hi phillipp,

I found these error when I try to sync google calendar

iTIP method: REQUEST
iTIP on REQUEST: found 1 items.
iTIP operations: 0
iTIP method: REQUEST
iTIP on REQUEST: found 1 items.
iTIP operations: 1
iTIP options on: REQUEST:UPDATE-MINOR
iTIP method: REQUEST
iTIP on REQUEST: no existing items.
iTIP operations: 1
iTIP options on: REQUEST
[calGoogleCalendar] Adding invitation event test2
[calGoogleRequest] Requesting POST https://www.googleapis.com/calendar/v3/calendars/myaccount%40gmail.com/events/import?sendNotifications=true
[calGoogleCalendar] Setting Upload Data (application/json; charset=UTF-8):
{"start":{"dateTime":"2014-10-16T18:00:00+07:00","timeZone":"SE Asia Standard Time"},"end":{"dateTime":"2014-10-16T19:00:00+07:00","timeZone":"SE Asia Standard Time"},"iCalUID":"30961d1a-07b5-4ba9-90ce-189689c5f4ed","updated":"2014-10-17T03:24:51Z","summary":"test2","description":"test","transparency":"opaque","visibility":"public","sequence":"0","reminders":{"overrides":[],"useDefault":false}}
[calGoogleCalendar] Request POST https://www.googleapis.com/calendar/v3/calendars/myaccount%40gmail.com/events/import?sendNotifications=true responded with HTTP 400
[calGoogleCalendar] A request Error Occurred. Status Code: 400 Bad Request Body: {
 "error": {
  "errors": [
   {
    "domain": "global",
    "reason": "invalid",
    "message": "Invalid value for: Invalid format: \"2014-10-17T03:24:51Z\" is malformed at \"Z\""
   }
  ],
  "code": 400,
  "message": "Invalid value for: Invalid format: \"2014-10-17T03:24:51Z\" is malformed at \"Z\""
 }
}

Error: [calGoogleCalendar] Adding Item test2 failed:2147746065: A request Error Occurred. Status Code: 400 Bad Request Body: {
 "error": {
  "errors": [
   {
    "domain": "global",
    "reason": "invalid",
    "message": "Invalid value for: Invalid format: \"2014-10-17T03:24:51Z\" is malformed at \"Z\""
   }
  ],
  "code": 400,
  "message": "Invalid value for: Invalid format: \"2014-10-17T03:24:51Z\" is malformed at \"Z\""
 }
}

[calCachedCalendar] Calendar My Account is unavailable, adding item offline
iTIP on REQUEST: found 1 items.
iTIP operations: 0
iTIP method: REQUEST
iTIP on REQUEST: found 1 items.
iTIP operations: 0

OS: ubuntu 14.04
ThunderBird 31.2.0
Lightning : 3.3.1
Provider for google calendar : 1.0.1