Replaces the --no-wrap flag with --md in all "photoprism show ..."
subcommands, as this is easier to understand. See also #2247.
Unused code was opportunistically removed along the way.
Replaces "photoprism config", which could only display
current configuration values. Codecs and file formats
have been refactored along the way.
Signed-off-by: Michael Mayer <michael@liquidbytes.net>
