Release log update
Encode release log update
findLevel now handles alternate html files, plus has a hopefully more extensible design
Updated descriptions of LRG tracks with info from Fiona Cunningham at EBI.
refs #11863
Added md5HexForString.
isAllDna has a condition that surprised me (returns FALSE if size is 1),
so I added isAllNt which has the behavior I expected.
Added comment method to annoFormatter.
Work in progress for #11460 (paste/upload variant input options...):
adding an option for user to paste/upload variant identifiers which
will be translated into a sorted list of vcfRecords.

Currently we recognize only rs# IDs.  I was considering adding
dbVar IDs, but those could come from multiple sources (DGV, ClinVar,
ISCA) so I'm not sure.

Treating all symbolic/named alleles as deletions... non-ideal,
but fortunately those are a small minority in dbSNP.

Next: recognize HGVS IDs.

The grander vision of #11460 includes accepting VEP input format
and VCF, but I think those should be new SELECT options so we don't
get into quagmire of guessing format.
Adding FAQ about minimum system requirements for a mirror, refs #11941
Merge branch 'master' of hgwdev.cse.ucsc.edu:/data/git/kent
Merge remote-tracking branch: upstream/master