add drag'n'drop stitch reorder within OE_ui_stitchlist

- make linkStitches point pickable

- remove the OE_commandDisplay class (specific functions are merged in OE_diplay)

- 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

- add OE_controller::getSelectionBoundingBox function
- rename "select" function to "picking" in OE_interfaceDisplay (more clear name)
- change selection mode into an editionState in OE_interfaceDisplay
- add scale method to curves and stitchs
- add ScaleSelection state and implement the scale selection actions and UI widget
- clean and comment OE_interfaceDisplay
- add BoundingBox::getCenter method
- add OE_display::screenToDocument method

- TODO write OE_actionScaleSelectedLineStitchWidth::scaleWidth and scaleLen methods

- add actions for moves
- add - operator to vector_2d class

- add an initNewDocument method in OE_controller
- if OE_document::getBound is called in an empty document it return the hoop bound
- change the keyboard shortcut S key to L for creating linestitch to avoid problem with CTRL+S

-use /dev/rfcomm1 for controler creation

- change the color and size of end subcurve

- make birailstitch creation worked

- fix problems on linestitch interactive creation

- add creations function
- change functions in joincurve class to insert new curves anywhere and remove them
- add an action to create and add a subcurve to a joincurve

- add some actions to clear selections

- add a toggle close function for last selected curve (C key)

- add editLastAction function to OE_controller to make possible "live modification"
- add OE_actionSetPointCurve and OE_actionMovePointCurve to OE_actionCurves
- add setPoint function to OE_pointcurve and change getPoint to use reference instead of pointer

- add unselection with "control" key

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

- doxygen refresh
- add some exemple patterns

- add function to drive the embroidery hardware
- add a background grid into the editor view
- add a new motif into linestitch