Added tab-based interface to userpage UI. Yes, it is plugin expansible, and yes, it breaks existing plugins that add code to the userpage (but that can be fixed with a "colspan=4")
html, body {height:98%}
body {
background-color: #FFFFFF;
font-family: Verdana, Arial, Helvetica, sans-serif;
font-size: 10px;
scrollbar-3dlight-color: #F0F0EE;
scrollbar-arrow-color: #676662;
scrollbar-base-color: #F0F0EE;
scrollbar-darkshadow-color: #DDDDDD;
scrollbar-face-color: #E0E0DD;
scrollbar-highlight-color: #F0F0EE;
scrollbar-shadow-color: #F0F0EE;
scrollbar-track-color: #F5F5F5;
}