Pretty much pseudo-commit to make Hg let me merge some stuff in, only change was the "system plugin" key in $plugin_meta in PluginManager
body, td, pre {font-family:Verdana, Arial, Helvetica, sans-serif; font-size:10px;}
body {background: #FFF;}
.mceVisualAid {border: 1px dashed #BBB;}
/* IE */
* html body {
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;
}