get_block_ubuntuone_notification_bubbles() parses config on it's own, should use config.get_boolean()

[Matt Fischer]

get_block_ubuntuone_notification_bubbles() shouldn't be hand-parsing config files, it should use config.get_boolean() to handle it. The ConfigParser allows for values more than "false" and "False" according to the docs.

            config = ConfigParser.ConfigParser()
            config.read(cfile)

            if(config.read(cfile)):
                if config.has_section("notifications"):
                    val = config.get('notifications', 'show_all_notifications')
                    if val == "false" or val == "False":
                        return True
                    else:
                        return False