Changes -
* New setting nav item for connected organizations.
* All new page for adding a new server.
* Minor UI changes in setting page.
* Update default height, width of the main window.
* Fix webview showing outline.
* Hide Server nav item in setting page.
Fixes#340.
The label "New Server" sounds to me like it's suggesting I create
a new actual server -- which I don't want to do, I want to connect
to an existing server where a community I know is talking.
Change the text to track a bit closer to what's really going on.
I think there's probably more that would be useful to do to
make this flow smoother for a new user, but this is a start.
