- In CellViewer, adds a shortcut for launching Stratus scipts: SHIFT+P,S
and one for pure Python scripts: SHIFT+P,P.
- In ExceptionWidget, put the trace inside a QScrollArea so all the call
stack can be viewed regardless of the window's size. It seems that
QFontMetrics has problems to compute the right text size when using
a Qt::RichText enabled widget. Adds some "manual" corrections, hope
they will be sufficiently portables.