subclass DIALOG_SHIM support.
Tried dialog_drc but it has nesting problems due to use of DRCLISTBOX, which
needs to be put into its own header file to untangle.
* make 2 bitmaps more visible.
* fix incorrect screen redraw when rotating a component.
* netlist : the pcbnew advanced format can be now stored (persistant option) in project config.
Pcbnew:
* graphic_item_properties_base.fbp * dialog pad edit: make some strings more easier to translate.
* global pad edition: fix a bug that change pad position instead of pad size (round pas only).
Eeschema:
* fix a bug: new created wires were not alwaes shows until the screen was redrawn.