Commec Setup Patch

[MichaelBarnett]

Patches commec setup to correctly unpack user defined paths containing ~, terminal vars, and use the correctly validated path during the rest of the setup process.

Changes

• commec setup now correctly validates user input (~) for path to download commec databases into.
• Includes feedback to the user if a ~name/ user is specifically invalid, this is to catch ~commec-dbs/ instead of ~/commec-dbs/ typos as well as username typos.
• commec setup now exits gracefully when stopped with keyboard interrupts (Ctrl+C for example).

Bug fixes

• User expansion on a path now works correctly (~/downloadlocation/commec-dbs/ will expand to the user root, instead of creating a ~ folder in the current directory)
• The correctly validated path is now carried through to be used when the folders are actually created, instead of only during the validation step.