[notification] introduce an official `notify_on_commit` function
It provides a proper notification api instead of replacing it by yet another
clumsy one.
Closes #2837251
* {
color: #000 !important;
}
div#popupLoginBox,
div#popupLoginBox,
img#logo, div.header,
#navColumnLeft, #navColumnRight,
#footer {
display: none
}
div#pageContent{
border: none;
}