revalidate track panels after component resize.  Fixes #901 ?
revalidate track panels after component resize.  Fixes #901 ?

amwenger/igv,amwenger/igv,igvteam/igv,amwenger/igv,amwenger/igv,amwenger/igv,igvteam/igv,igvteam/igv,igvteam/igv,igvteam/igv