birthday import error

[codemonkey]

Dexter crashed while importing a vcard file (originally created by kaddressbook):

Exception in thread Thread-1:
Traceback (most recent call last):
  File "/usr/lib64/python2.7/threading.py", line 552, in __bootstrap_inner
    self.run()
  File "/usr/lib/python2.7/site-packages/dexter/backend/utilities.py", line 49, in run
    import_from_vcard_string(vstring, self.q)
  File "/usr/lib/python2.7/site-packages/dexter/backend/utilities.py", line 135, in import_from_vcard_string
    first_name = card.n.value.given.strip() #
AttributeError: 'list' object has no attribute 'strip'

Traceback (most recent call last):
  File "/usr/lib/python2.7/site-packages/dexter/app.py", line 657, in import_timeout
    item[8], item[9], item[10])
  File "/usr/lib/python2.7/site-packages/dbus/proxies.py", line 68, in __call__
    return self._proxy_method(*args, **keywords)
  File "/usr/lib/python2.7/site-packages/dbus/proxies.py", line 140, in __call__
    **keywords)
  File "/usr/lib/python2.7/site-packages/dbus/connection.py", line 630, in call_blocking
    message, timeout)
dbus.exceptions.DBusException: org.freedesktop.DBus.Python.ValueError: Traceback (most recent call last):
  File "/usr/lib/python2.7/site-packages/dbus/service.py", line 702, in _message_cb
    retval = candidate_method(self, *args, **keywords)
  File "/usr/bin/dexter-server", line 104, in CreateContact
    phones, addresses, imnicks, notes, self.store)
  File "/usr/lib/python2.7/site-packages/dexter/backend/serverutils.py", line 73, in create_new_contact
    int(birthdaylist[2]))
ValueError: invalid literal for int() with base 10: '01T00:00:00Z'

This is a date format I've seen before. I don't know whether it is a valid date format for vcards but it's probably a good idea in any case to check the data to see if it's a number (s.isdigit()) before passing to int() (or at least catch the exception). I don't know if a time is useful with a birthday so it might be okay to just strip the time off starting with the T.