[FIX] bus,im_livechat: away status after 30 minutes of inactivity

Also, away users aren't considered as available for the livechat anymore.

addons/bus/models/bus_presence.py

@@ -9,7 +9,7 @@ from openerp.tools.misc import DEFAULT_SERVER_DATETIME_FORMAT
 from openerp.addons.bus.models.bus import TIMEOUT
 
 DISCONNECTION_TIMER = TIMEOUT + 5
-AWAY_TIMER = 600  # 10 minutes
+AWAY_TIMER = 1800  # 30 minutes
 
 
 class BusPresence(models.Model):

addons/im_livechat/models/im_livechat_channel.py

@@ -144,7 +144,7 @@ class ImLivechatChannel(models.Model):
             :retuns : return the res.users having their im_status online
         """
         self.ensure_one()
-        return self.sudo().user_ids.filtered(lambda user: user.im_status == 'online' or user.im_status == 'away')
+        return self.sudo().user_ids.filtered(lambda user: user.im_status == 'online')
 
     @api.model
     def get_mail_channel(self, livechat_channel_id, anonymous_name):