Modulaweb/OpenLayers.Popup.Popover — pull request #4 by bassjobsen (2013-07-02 20:05:31+00:00)
Title: Add css and less files based on Twitter's Bootstrap 2.3.2

All seems to work without extra css code like;

In order to display things right, you will need to add (and adapt) this piece of css :
.popover-title span {
display:block;
float: left;
width: 236px;
}