gritter: Accept jQuery or DOM objects for title and text
gritter: Accept jQuery or DOM objects for title and text

Teach Gritter to accept anything that jQuery's `.append()` method
accepts for the title and text of a popup message. This makes it
easier to safely build HTML messages with proper escaping of special
characters (to prevent XSS vulnerabilities).

storytouch/etherpad-lite,storytouch/etherpad-lite,storytouch/etherpad-lite,ether/etherpad-lite,ether/etherpad-lite,ether/etherpad-lite