Opening the table view closes webclient websocket connections

At the moment when clicking the "Open Tableview" link the table view is loaded within the DMX Webclient window. As a result the browser drops the Webclient's websocket connections. When going back to Webclient (through browser "Back" button) the Webclient does not work as expected anymore.

• The DMX Webclient's websocket connection to DMX server is dropped. Later attempts by the server to send a message fail, causing a stacktrace in server log.

• The Webpack Dev Server's websocket connection is dropped. For the Webclient Hot Module Replacement does not work anymore.

The suggested workaround is to change dmx-tableview-command so that the table view is opened in a new window/tab.

@mukil @dma @irau FYI