[chrome] Wait for page complete before auto-inject
Avoid extra pre-auth api requests

Close #1586
Swap out Chrome action icon
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.
Remove unwanted 1M sample PDF
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.
   Use async metadata extraction for PDF

 * Updated PDF plugin to fcdf1eac (pdf-update branch)
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
Removed obsolete links to sourcemaps
Merge pull request #1563 from hypothesis/1334-pdfjs-6

[WIP] add support for packaging with PDF.js extension - try 4
Avoid noise at end of Chrome build on new Sass
Add link to terms of service on create account form.
Merge remote-tracking branch 'origin/chrome-icon'
Cookies last 30 days

Sessions last only a week, but if you visit again they should refresh.
The cookie will last a month before you have to log in again.
Update Annotator PDF plugin to 0bc62e04 (pdf-update-1.0.712 branch)

This update brings support for PDF.js v1.0.712, and thus FF32.
Closes #1592.
Update Terms of Service micro-copy

By adding some supporting text to the link.