Made track selection not use time.sleep()
added search tracks to volvox test, started combination tracks
moved tests around, changed element css to match
start troubleshooting combination track test
sped up send_keys, tried to fix combination track
remove some useless stuff
clean up Cleanup
add comments
use more xpath instead of fragile CSS selectors, remove non working code from combination track test
add explicit dependency on DB_File
remove explicit Perl version check from HashStore stream_set
warn about blank name records and skip them
make genome view trackPadding configurable, fixes #377
don't refuse to start if no tracks are defined
small in-passing cleanups to IndexNames.pm
use IO::Uncompress::Gzip with -MultiStream option instead of PerlIO::gzip to read VCF files.  fixes #380
make HashStore target directory as part of constructor, fixes #379
add --compress option to generate-names.pl, closes #378
fix HashStore not using the existing value for hash_bits in its meta.json
fix pin_underlay z-index issue