window management rework

Signed-off-by: Christophe Chapuis <chris.chapuis@gmail.com>
Gestures for the GestureArea component

Signed-off-by: Christophe Chapuis <chris.chapuis@gmail.com>
QML: rename Compositor as WindowManager, and take C++ compositor as input property of root object

Signed-off-by: Christophe Chapuis <chris.chapuis@gmail.com>
QML: let the window manager do the work related to the change of a window's state

Signed-off-by: Christophe Chapuis <chris.chapuis@gmail.com>
QML: rounded corners for all windows, gesture for going back to card, start app as maximized

Signed-off-by: Christophe Chapuis <chris.chapuis@gmail.com>
Merge pull request #20 from webOS-ports/tofe/architecture-work

Tofe/architecture work