* Added defaultSelectedRow property in table widget so that users can configure default selected rows
* Cypress test cases added to test default row selection in table widget
* Fix defualtSelectedRow property's evaluation type
* Fix default select row type
* Set default selected row when resetting user selected rows
* Use defaultSelectedRow when no user selected row in table
- Adds Web workers and does evaluations in off the main thread
- Removes any need to store functions in the data tree and only keeps them around while evaluating
- Maintains a stored data tree in the redux state
- Evaluates based on editor events instead of state changes
* Working version of video player.
* Adding default video url
* Reducing the default widget of video widget
* Fixed tests
* Adding video icon.
* Removing commented code.
* Adding playState, onPause, onStart, onEnd.
* Adding onPlay event.
* Fixing onPlay
* Adding isVisible field.
* Changing video icon.
* Fixing Popover table video.
* Adding an error message for no url.
