Loads tags from tag file and return
        as flickr api compatible string

def _load_tags(self,directory):
        """Loads tags from tag file and return
        as flickr api compatible string
        """
        #FIXME: should check if DB tracking file before using it
        # --- Read tags out of file
        _tags=''
        try:
            fullfile=os.path.join(directory,TAG_FILE)
            ltags=open(fullfile).readline().split(',')
            _tags=''' '''

            for tag in ltags:
                _tags+='''"'''+tag.strip()+'''" '''
            _tags=_tags.strip()
        except:
            logger.info("No tags found in %s"%(directory))

        return _tags