validate bed files have proper contig names near beginning of submitters

[Kurt-Hetrick]

i.e. grch38 and hg19 have chr prefixes and grch37 does not. also no use of unlocalized/unplaced contigs. should be fairly easy to implement and probably worth the while in doing so. exit out if validation fails. alternately, it is possible to add this to the fix bed files, but I'm going to opt not doing it as it could mask that a bed file was made on the wrong genome build...so instead I think that I will exit out and add message to end user to check/ensure that bed file is made on the correct genome build for the pipeline submitted.