manifest: use our own branch of indexeddb.js
view.modal: assign aria-hidden attribute to background
index: use our own indexeddb with fixes
index: add more aria-role attributes for screenreaders
component.mobify: hide the address bar on some(tm) mobile browsers
add "geticons" API endpoint, which supplies the feed icons

This API endpoint is given a JSON list of the existing icons with their MD5 hash, so that the data transferred is far less voluminous, which can reduce page load time vastly on slow connections
component.feedlist: clean up persistence code
api.js: better check for appcache status