Show bar when missing file is added to permacache
Created by: stewie
split from #36 (closed) b/c this is a general feature request (not specific to requestpolicy interactions)
When "retrieve and cache missing" option is enabled, I wish decentraleyes would (optionally) raise an infobar announcing "page is requesting a not-yet-cached item from a recognized CDN. Allow/Deny". Upon 'Allow' buttonclick, DE would retrieve and permacache the item then trigger a page reload. It's reasonable to expect this will be a seldom-occurring interruption.
If missing (from decentraleyes as-installed coverage) occurrences are NOT infrequent, we need to wonder/question "What's going on?" -- in the wild, are websites attempting cache-busting in order to achieve a ping, by appending, for instance hxxp://CDNsite/path/path/jquery-2.1.2.js**?imatrackingsubstring**