Sidebar appears broken with no buttons

[wbrenna]

This is because the sidebar's width has been set to some very small value. Probably a minimum pixel width for the sidebar is a good idea.

[wbrenna]

Should be fixed by changing the getSidebarWidth() in Settings.cpp to return a value of e.g. 140 if undefined. Though this may not work; instead another course could be to use gtk_window_set_default_size() in Sidebar.cpp.