ZMI-Minimap; collapsible content blocks

[drfho]

For faster navigation in a page that contains a lot of blocks it could be helpful if the GUI is "somehow" collapsible or a minimap is shown. A very primitive protopye illustrates the idea by applying this CSS snippet:

/* *
body.zmi ul.zmi-container li.zmi-item .center > div {
	zoom:.8;
}
body.zmi ul.zmi-container li.zmi-item {
	max-height:2.7rem;
	overflow:hidden;
}
body.zmi span.zmi-ids, 
body.zmi div.zmi-manage-main-change {
	display:none !important
}