reconnect-util: Gracefully reload current webview. (#783)
reconnect-util: Gracefully reload current webview. (#783)

Before we were destroying, removing the webview elements when we
need to reload webviews which cause unwanted side-effect for example
drafts not saving because no beforeunload event handler isn't run.

Fixes: #767. 
zulip/zulip-desktop,zulip/zulip-desktop,zulip/zulip-desktop,zulip/zulip-desktop