Qt port: fix controller document, fix keyboard modState, fix key event redirection, fix last tab close bug, fix menu emulated shortcuts, add pakal to build

  OE_actionScaleSelectedStitchLen
  OE_actionScaleSelectedStitchWidth
  OE_actionSetSelectedStitchPattern
- fix memory leaks when deleting meta actions:
  OE_actionScaleSelectedBirailStitchLen
  OE_actionScaleSelectedLineStitchWidth
  OE_actionScaleSelectedLineStitchLen
  OE_actionSetSelectedLineStitchPattern
  OE_actionSelectionClear

- warpStitch include now x and y offset for pattern translation
- add xOffset and patternSteps attribute to linestitch and rename offset to yOffset

- remove some old test functions in OE_controller

- TODO write OE_actionScaleSelectedLineStitchWidth::scaleWidth and scaleLen methods

- add UI controls with numpad + - keys for width (+ctrl for len) and 1-> 6 for motif

- fix problems on linestitch interactive creation

- create an actionSelection only when there is a selection

- improve selection mode to create only one action for each clic
- fix problem on delete of some stiches