1. Fixed a bug or two where the floating toolbar buttons would make kstars...

1. Fixed a bug or two where the floating toolbar buttons would make kstars crash if there were no image
2. Finished work on the other buttons so all the buttons on the floating toolbar now work.
3. Made the focus profile a Qt Tool so it vanishes when other applications come in front.
4. Added Gesture Capabilities to the QCustomPlots so that the zooming you now do with the scroll wheel can now be a pinch gesture on a trackpad too.
5. Added range dragging to the guide and hfr plots
6. Added zoom capability to the hfr plot.