[multi-sources-removal] Drop the "true" multi-sources planner
Only keep copy-based sources. This will soon allow for greater code
simplification.
Related to #2919300
* {
color: #000 !important;
}
div#popupLoginBox,
div#popupLoginBox,
img#logo, div.header,
#navColumnLeft, #navColumnRight,
#footer {
display: none
}
div#pageContent{
border: none;
}