Poor wording in alert when trying to install from unauthenticated sources

[Jay S]

When trying to install untrusted packages, the alert message reads:

==
Requires installation of untrusted packages

The action would require the installation of packages from not authenticated sources.
==

The second sentence should definitely be something more like:

> This action would require the installation of packages from sources that have not been authenticated

or at least

> This action would require the installation of packages from unauthenticated sources.

(Note the changing of "The action" to "This action.")

The first sentence ("Requires installation of untrusted packages") is a sentence fragment and is somewhat redundant. I'm not sure what the GNOME HIG has to say about this, but it strikes me as clunky.

Also, the "Details" box that drops down isn't really self-explanatory. Is it possible to change the word "Details" there? Maybe to "Untrusted packages" or something?

I think it would make more sense overall for the first, large sentence to explain broadly what is going on, such as:

> One or more packages cannot be installed

The next message should elaborate:

> One or more packages marked for installation come from sources that have not been authenticated. Installation cannot continue.

Then the label on the drop-down arrow could read:

> Untrusted packages