Mark mods in the UI and the mod-pack show ctl command that are missing
with a question mark and mark mods with a missmatched checksum with an
exclamation mark.
Validate sha1 sum matches for a mod used in ModsTable if it is present.
This prevents showing details for a zip file where the version matches
but the cheksum does not.
Wipe and reconstruct the instances' mods/ folder using the configured
ModPack for the case were the mods folder is shared with the master
server. This assumes the master server will check the mod checksums
before sending the start request.
The Factorio Mod Portal uses and provides SHA1 hashes of mods, so it
makes sense to align the ModPack and ModInfo structures to sha1 by
renaming the genericly named hash property to sha1.
Hornwitser