Fixes: #26

Update files-search.page to reflect current search functionality within
Nautilus / GNOME Files.
Include information on how to customize search within Nautilus
Fixes #49

Related: #26

Related: #51

Fixes #51.

Create a guide page from the stub, pulling in a few simple and common
setup tasks.

Closes: #52

As tethering is considerably simpler, and by far the more common method
on modern phones, recommend it over using a 3G modem.

Related: #52

Related: #35

Related: #35

Fixes: #20

Add that the ink or toner level is shown only if it is available.

Fixes: #17

Break lines at 79 characters for readability on screen
Remove 'joke' text suggesting that we hope users won't need to use
the guide
Minor phrasing adjustments in text for style

Fixes #37

Closes #41

Fixes https://bugzilla.gnome.org/show_bug.cgi?id=737044

The procedure is slightly different for those 2 models, and there's an
oft-used instruction that bears being mentioned for PS4 controllers.