Fix error backporting chrome inject race fixes
Always copy bootstrap and destroy in extension
Add PDF.js assets to the Chrome extension

This comes from PDF.js v1.0.473, generic build, with zero modification.
Insert H code into the PDF.js viewer html
Fix URI and metadata handling for PDF documents

Don't load the Document plugin for PDF files; Annotator's PDF plugin
provides the fuctionality (uri+metadata extraction) in these cases.
When displaying annotations, avoid non-clickable URIs
Modify background.js for PDF.js

inject and remove logic has been modified to handle
PDF.js differently.
Update Chrome extension manifest.json

Remove a bunch of useless permissions,
update a few filenames
Updated PDF plugin to fcdf1eac (pdf-update branch)

Also update guest.coffee to use async metadata extraction for PDF
Remove unwanted 1M sample PDF