change utils.uid() to return url-safe chars. Closes #753
change utils.uid() to return url-safe chars. Closes #753

khirayama/connect,lian774739140/connect,RickyDan/connect,RoseTHERESA/connect,gtomitsuka/connect,dkfiresky/connect,llwanghong/connect,tanveer12332/connect,mi2oon/connect,liuwei9413/connect,keenwon/connect,qitianchan/connect,chinazhaghai/connect,davehorton/drachtio,behind2/connect,senchalabs/connect,wghust/connect,khalerc/connect,mi2oon/connect,austincitylimits/connect