URI detection in create new entry via doorhanger

[sandysage]

When creating a new online account, I want those credentials to be easily populated into my Lockbox as a new entry.

Context

Research findings from Alpha testing indicates users need easier methods to capture new account information on the page and save it. Without tools to support getting those details into the Lockbox, without leaving the context of the page, the usability suffers greatly.

[linuxwolf]

to have a good starting search term, some (unrefined) thoughts on origins: https://gist.github.com/linuxwolf/5722b60907826b47a97b10cf36676ca2