Implement loading behavior #4
Description
The View.java file (com.data2semantics.cds.ui.client.view) contains onLoadingFinish() and onLoadingStart() methods, which are unimplemented. Having more data in the prototype, might increase loading times, making this issue more important.
Example of the loading panel for the old GWT layout: https://github.com/Data2Semantics/CDSInterface/blob/4119d2723f3893a0722f9b286b2442b632e7eeab/src/com/data2semantics/mockup/client/ui/LoadingPanel.java
Loading panel should not -block- the interface. You should still be able to click buttons