Rename permissions.html to help.html
Move the bookmarklet code into a separate template
Remove bookmarklet checks from the embed.js
Mention PDF support in the local file help document
Add help section for accessing Chrome pages
Move the first run code into the extension
Make SidebarInjector idempotent
Fix path to embed.js it cannot use a full protocol
Ensure injectIntoTab is idempotent
Only inject into tabs that have finished loading