core: configuration file

SàT's main options can now be put in a configuration file which can be in different locations
Bridge: new getConfig option

src/bridge/DBus.py

@@ -170,6 +170,12 @@ class DbusObject(dbus.service.Object):
     def disconnect(self, profile_key="@DEFAULT@"):
         return self.cb["disconnect"](unicode(profile_key))
 
+    @dbus.service.method(const_INT_PREFIX+const_COMM_SUFFIX,
+                         in_signature='sss', out_signature='s',
+                         async_callbacks=None)
+    def getConfig(self, section, name, profile_key='@DEFAULT@'):
+        return self.cb["getConfig"](unicode(section), unicode(name), unicode(profile_key))
+
     @dbus.service.method(const_INT_PREFIX+const_COMM_SUFFIX,
                          in_signature='s', out_signature='a(sa{ss}as)',
                          async_callbacks=None)