We have made something similar for CONTINUUM-1333.
Can you look and comment ?
Thanks.

I don't think it's the same thing. I was just looking for a summary of all of the columns on the page that shows all of the groups, not the the page that shows all of the projects within a group.

here's an example

Why not in the top and a design as in CONTINUUM-1333.
IMHO when you want a summary it must be in the top ?

top or bottom is really just aesthetics, having at the bottom seems more natural to me, it's just like a typical spreadsheet if it is at the bottom

I used extremetable's built in calc feature to provide this.

In order to use it I had to separate the build status column into 3 separate columns instead of just the single column cell with the 3 icons and 3 totals in it.
The icons were moved to the top as headers (this avoids having them repeated several times and gives a slightly cleaner look IMO).
I totals are now also right aligned.
I was able to delete a deprecated class to accomplish this.

Note that the images in the header were inserted using the headerStyle rather than using headerClass with style classes that are already defined with the image url. This was intentional because strange things happen when sorting is turned on (which is a feature that a couple of JIRA's are requesting).

Patch screenshot.
Pacth rework with adding in extremecomponents.css (if not alignement is not correct with firefox).
.eXtremeTable .calcRow {
text-align: right;
}

.eXtremeTable .calcTitle {
text-align: left;
}

Attach new patch.
IMHO we have to highligth the summary line but I'm not a UI specialist what the others thinks ?

Patch commited in rev 581085 with moving inline css to extremecomponents.css.
Thanks.