#148 multiple projects on one GanttChart

To coordinate multiple projects (sometimes depending each one from others, at least via common resources) will be useful to generate common GanttChart and resources summary. So far I use workaround: projects are defined as main task in one "super project" but this way I can't get detailed view of one particular project. In other words: this "super project" ("TheLife" ;-) is going to be to large for convenient managing.