diff --git a/sylk/applications/conference/configuration.py b/sylk/applications/conference/configuration.py
index 2f0321b..504b2e8 100644
--- a/sylk/applications/conference/configuration.py
+++ b/sylk/applications/conference/configuration.py
@@ -1,140 +1,132 @@
 # Copyright (C) 2010-2011 AG Projects. See LICENSE for details.
 #
 
 __all__ = ['ConferenceConfig', 'get_room_config']
 
 import os
 import re
 
 from application.configuration import ConfigFile, ConfigSection, ConfigSetting
 from application.system import host
 
-from sylk.configuration.datatypes import IPAddress, NillablePath, Path, Port, URL
+from sylk.configuration.datatypes import IPAddress, NillablePath, Path, Port
 
 
 # Datatypes
 
 class AccessPolicyValue(str):
     allowed_values = ('allow,deny', 'deny,allow')
 
     def __new__(cls, value):
         value = re.sub('\s', '', value)
         if value not in cls.allowed_values:
             raise ValueError('invalid value, allowed values are: %s' % ' | '.join(cls.allowed_values))
         return str.__new__(cls, value)
 
 
 class Domain(str):
     domain_re = re.compile(r"^[a-zA-Z0-9\-_]+(\.[a-zA-Z0-9\-_]+)*$")
 
     def __new__(cls, value):
         value = str(value)
         if not cls.domain_re.match(value):
             raise ValueError("illegal domain: %s" % value)
         return str.__new__(cls, value)
 
 
 class SIPAddress(str):
     def __new__(cls, address):
         address = str(address)
         address = address.replace('@', '%40', address.count('@')-1)
         try:
             username, domain = address.split('@')
             Domain(domain)
         except ValueError:
             raise ValueError("illegal SIP address: %s, must be in user@domain format" % address)
         return str.__new__(cls, address)
 
 
 class PolicySettingValue(list):
     def __init__(self, value):
         if isinstance(value, (tuple, list)):
             l = [str(x) for x in value]
         elif isinstance(value, basestring):
             if value.lower() in ('none', ''):
                 return list.__init__(self, [])
             elif value.lower() in ('any', 'all', '*'):
                 return list.__init__(self, ['*'])
             else:
                 l = re.split(r'\s*,\s*', value)
         else:
             raise TypeError("value must be a string, list or tuple")
         values = []
         for item in l:
             if '@' in item:
                 values.append(SIPAddress(item))
             else:
                 values.append(Domain(item))
         return list.__init__(self, values)
 
     def match(self, uri):
         if self == ['*']:
             return True
         domain = uri.host
         uri = re.sub('^(sip:|sips:)', '', str(uri))
         return uri in self or domain in self
 
 
-class WebURL(str):
-    def __new__(cls, url):
-        url = URL(url)
-        if url.scheme.lower() not in ('http', 'https'):
-            raise ValueError('invalid web URL: %s' % url.original_url)
-        return url.url
-
-
 # Configuration objects
 
 class ConferenceConfig(ConfigSection):
     __cfgfile__ = 'conference.ini'
     __section__ = 'Conference'
 
     db_uri = ConfigSetting(type=str, value='sqlite://'+os.getcwd()+'/var/lib/sylkserver/conference.sqlite')
     history_table = ConfigSetting(type=str, value='message_history')
     replay_history = 20
 
     access_policy = ConfigSetting(type=AccessPolicyValue, value=AccessPolicyValue('allow, deny'))
     allow = ConfigSetting(type=PolicySettingValue, value=PolicySettingValue('all'))
     deny = ConfigSetting(type=PolicySettingValue, value=PolicySettingValue('none'))
 
     file_transfer_dir = ConfigSetting(type=Path, value=Path('var/spool/sylkserver'))
     push_file_transfer = False
 
     screen_sharing_dir = ConfigSetting(type=Path, value=Path('var/spool/sylkserver/screensharing'))
     screen_sharing_ip = ConfigSetting(type=IPAddress, value=IPAddress(host.default_ip))
     screen_sharing_port = ConfigSetting(type=Port, value=0)
     screen_sharing_use_https = True
     screen_sharing_certificate = ConfigSetting(type=NillablePath, value=NillablePath('tls/default.crt'))
 
     advertise_xmpp_support = True
     pstn_access_number = ConfigSetting(type=str, value='')
 
 
 class RoomConfig(ConfigSection):
     __cfgfile__ = 'conference.ini'
 
     access_policy = ConfigSetting(type=AccessPolicyValue, value=AccessPolicyValue('allow, deny'))
     allow = ConfigSetting(type=PolicySettingValue, value=PolicySettingValue('all'))
     deny = ConfigSetting(type=PolicySettingValue, value=PolicySettingValue('none'))
 
     pstn_access_number = ConferenceConfig.pstn_access_number
     advertise_xmpp_support = ConferenceConfig.advertise_xmpp_support
 
 
 class Configuration(object):
     def __init__(self, data):
         self.__dict__.update(data)
 
 
 def get_room_config(room):
     config_file = ConfigFile(RoomConfig.__cfgfile__)
     section = config_file.get_section(room)
     if section is not None:
         RoomConfig.read(section=room)
         config = Configuration(dict(RoomConfig))
         RoomConfig.reset()
     else:
         # Apply general policy
         config = Configuration(dict((attr, getattr(ConferenceConfig, attr)) for attr in ('access_policy', 'allow', 'deny', 'pstn_access_number', 'advertise_xmpp_support')))
     return config