Make synopses more concise in various place, improve
consistency of formatting, and fix some small mistakes
and oversights.
Closes: #2307
Approved by: matthiasclasen
When I decided to add --columns without --show-columns,
I remove the option everywhere. Almost. These are the
leftovers I forgot.
Closes: #2227
Approved by: alexlarsson
The --verbose and --ostree-verbose options are global to all
subcommands, but --version can only be used with the main "flatpak"
command, so fix the man pages to reflect that.
For a few commands the options aren't fully documented. This commit
makes the manpage documentation (almost) match the options shown
when you run "<command> --help" on the command line.
