Update input4MIPsFuncs to validate all inputs

[durack1]

The recent case of

:source_id = " UofMD-landstate-high-2-1-h" ; # Has a leading space
vs
:source_id = "UofMD-landstate-high-2-1-h" ;

Has caused problems, so add a test to check for invalid characters before proceeding with publication preparation. The code in CMIP6_CVs/src/CMIP6Lib.py:entryCheck should probably do the trick

[durack1]

@sashakames pinging you

[durack1]

Also need to update washPerms so that multiple target_mip publications alongside one another work - see https://esgf-node.llnl.gov/search/input4mips/?institution_id=UofMD&query=version:20190805 as an example