"View as..." page context menu item

[skyjake]

It should be possible to force a page to be interpreted in a specific format: plain text, gemtext, Atom XML, or some other supported format, regardless of what the media type or file extension are.

This is useful for example when viewing local files that may not have the expected file extension, when a misbehaving server sends an incorrect media type, to see the plain-text source version of a gemtext page, or to get an untranslated Gopher source.

In practice, this could be an item in the page context menu.

This could also be a solution for #338, allowing access to the original fetched page source.

[skyjake]

Version 1.13 makes it possible to toggle between plain text and styled Gemtext views.