use new ArchiveStableId->is_current() method
- fixed bug in branch colouring code
- nicer Event zmenus
- some code rationalisation
merge from vega-43-dev
resorted stranded issue to the wrong version (in general) - because convention change for showing features on reverse of query
converted lines to lines - now they can be clickable
better "default" for colours
added code to make lines clickable
fixed postscript hex colour handling
New glyph to draw functional_genomics regulatory feature track
New glyphset  for functional genomics regulatory feature data
added colours for the fg_regulatory_features track
removed warn
Changed display name to avoid clash with the functional genomics reg. features track
changed display names to avoid clash with the functional genomics regulatory features track
new glyphset for the functional genomics CTCF/Insulator track
changed display name
Altered display colours
changed to reflect alterations in functional genomics api
removed the 500kb size restriction
fixed typo