PartDesign: Refactor pattern features and gui
- remove StdDirection,StdAxis and StdMirrorPlane properties
- support sketch H_Axis, V_Axis, N_axis as valid references in patterns
- polish reference selection gui (unified for standard axes and custom references)
PartDesign: Deactivate nesting of original features in patterns
Sketcher, 0000944: Fix crash when the equality constraint is activated with a wrong selection