Remove finished item
POC for evaluating code from the content script
Update comments
Update TODO
No Factotum prefix to omnibox string

- it's appended to the end by the system
Add BlobUrlCache

- since Fcommand documents will be imported as blobs via URL, establish
  a cache so we don't have to do low-level management of blob URLs (which
  persist until the page is unloaded).  This prevents a proliferation of
  unique URLs for the same Fcommand document.  It matters more in the
  background page where the same Fcommand may be invoked many times.
Nest test description
Rename script

- now that devtools shows the extension name in the Content Script tab,
  there's no need to prefix the script name for easy identification
Add required content scripts
Use new send API
No need for new to create Error objects
Support URL or HTML string for import document

- use the new sendMessage API
- proper calling of response func
- surface errors during import and calling via logs for now
Allow importing sample fcommand from extension