Otherwise, we end up propagating those dependencies into targets that
link against that library, which creates unnecessary link-time
dependencies.
Also included are changes to readd now missing dependencies to tools
that actually need them.
The settings for Terminal are extracted into their own application,
TerminalSettings, which is reachable over the normal Settings menu as
well as the same place in the Terminal menu. The font settings are moved
into these settings as well, which are now split up into the "Terminal"
and "View" tabs. The font settings themselves receive an option to
override the selected font with the system default on the user side.
The live update behavior of all of the terminal settings is retained.
The layout of the new TerminalSettings is based around the other
Settings applications, but pixel-perfectness is missing in some places.
It's a bit fiddly and I'd like to have some better GUI::Label auto-size
behavior, but oh well :^)
This simplifies a bunch of error handling and makes the main function
quite a bit shorter.
It will become shorter yet, as we get better at propagating errors. :^)
