+ proper handling of group separator in InputField and QuantitySpinBox
+ add QuantitySpinBox to widget plugin
+ fix focus issue with QuantitySpinBox and InputField
+ fixes 0001563: Add units to Linear Pattern in PartDesign
+ fix bug in chamfer/fillet when aborting command
+ minor issue solved with message label of linear pattern panel
+ support units in pocket panel
+ support units in groove panel
+ support units in revolve panel
+ support units in polar pattern panel
+ support units in draft panel
+ support units in hole panel
+ support units in hole panel
+ fix doc string