Change rake test:js to run headless.

To run tests in browser, use rake test:js_in_browser.

Signed-off-by: Anurag Priyam <anurag08priyam@gmail.com>
Implement Edit Track synchronization between tabs/windows.

The use of WebStorage API requires browser IE 8+ and equivalent.

Signed-off-by: Vivek Rai <vivekraiiitkgp@gmail.com>
Initial jasmine test setup for EditTrack.js

Signed-off-by: Harsh Gupta <gupta.harsh96@gmail.com>
get a test transcript

This transcript was obtained by stringifying a transcript on the
EditTrack.

Signed-off-by: Harsh Gupta <gupta.harsh96@gmail.com>
read transcript and refSeq for EditTrack.spec.js

Signed-off-by: Harsh Gupta <gupta.harsh96@gmail.com>
Factor out code to export and import SimpleFeature

Signed-off-by: Harsh Gupta <gupta.harsh96@gmail.com>