Issue 306 - track rename. Added HicBrowser.setCustomCursorHandler(). (#312)
Issue 306 - track rename. Added HicBrowser.setCustomCursorHandler(). (#312)

* HICBrowser.setCustomCrosshairsHandler()

* issue 306. Set track name does not work for 2nd map.

igvteam/juicebox.js,igvteam/juicebox.js