Greatly improved zooming in Qtractor

[bluebell]

In the latest SVN version Rui has improved the zoom function both in the track view and in the MIDI edit window. A click to the "zoom in"-spyglass with pressed CTRL zooms immediately to the max (or vice versa to the min). Great for people like me who often do some fine-alignment of automation and audio tracks or program drum flams by adding a very short note immediately before the main note.

Pressing SHIFT zooms in and out in bigger amounts.

Very, very handy.