Parsing/Notes/Figure for Media

Special:GadgetUsage is our friend.

Plus, mwgrep on wikis in the javascript namespace.

Gadgets and User Scripts on enwp

 * most gadgets: don't necessarily inspect HTML -- 30% maybe use actual HTML most things might look for ids ...
 * taking an inventory of gadgets
 * no reliable way of knowing how user scripts ...
 * a few gadgets everyone uses: popup, hotcat, (5 or so) ... ppl post in village pump in < 30 mins if broken
 * some 20 or 30 that a few more ppl use and will take a while
 * last category: used for specialized processes .. about 100
 * page lists a lot of them