dates in sidrPanel should read from original data

[miromarchi]

Take for example "Cantiere di Mondi Nuovi: I nostri mondiali" project. The sidr panel shows dates as "12 giu 2014 - 22 giu 2014". The end date is false. It is the calculated date we imposed to the drawing (not less then 10 days) to visualize short projects. But here sidrPanel should show the original end date, which is "13 giu 2014".