Sidebar gets unsynced with webview when collapsing rows

[AkshayWarrier]

If you have something selected in the sidebar and if its parent row gets collapsed, the sidebar looses its selection and remains unselected even if the webview loads a different page. (Unless you select something again in the sidebar, in which case they sync up again)

This should also be kept in mind while implementing #23, the easiest thing to do would be to have the sidebar unselect the row but sync back again if the webview loads a different page. DevHelp also sort of faces this issue and shows inconsistent behaviour.