At least some scrapers (NYT and WashPo, for sure) should be updated to follow this pref
Addresses #327, Scrapers should either take snapshots or use URL field
Changed "Scholar" to "Zotero", everywhere
Apologies to anyone with working copy changes, but there are probably the fewer at this moment than there will be again.
Hopefully this won't break anything, though existing prefs will be lost. I avoided scholar.google.com--if you know any other legitimate "scholar"s in the code, be sure to fix them once I'm done here.
This is a multi-commit change--there's at least one more coming. *Do not update to this version! It won't work!*
