tiles per edge: fallback values changed to match stock site, after they undid their revert
slow animated fade speed, and add new tile status for render queue code
experimental: render queue. rather than dumping all retrieved data into the render code immediately, queue it up and feed it in a bit at a time
also, we pause a very short time between processing sections of the queue - should help ensure things are responsive if user interacts while rendering
todo: better status bar updates while queue is being processed
restore the code that prevents rendering short links. seems like the backend isn't removing enough (any?) links again, so they were having a big impact on performance
adjust the timers used at the start of a refresh, so IITC does it's work later. should give users a chance to interact a 2nd time
move the render queue batch size to the class - and use smaller values on mobile