Offer "Copy Bug Report" link

[ericlaw1979]

Offer a one-click means of copying text to the clipboard that summarizes the state of the page, suitable for copy/paste into a bug reporting system.

Summarize non-secure resources, add link to justification of necessity of doing the work.

[ericlaw1979]

Next steps:

1. Augment the data passed from the content script so that it sends the popup information on the frame's URL (if a frame) and any other contextual information useful in the bug report.
2. Update the data structure inside popup.js so we can readily pull the data into a textual report instead of burying the data in the UI state of the list items.
3. Write blog post on the attacks against latent mixed content (e.g. on whytls.com) and link that post in the error text copied.