Update url list without redraw

[ivangretsky]

Expected behavior:

The URL list would not redraw every time an url is added or the tab is focused. I am sure you know about this, but would like to bring it up as this flashing is something that makes using the app feel buggy.

Actual behavior:

The URL list would redraw every time an url is added, the tab focus is lost and than gained again or the program is minimized and then maximized.

Operating System version:

Windows 10