Preparing work on trapezoidal pad DRC: cleaning code. some comments and translations added in drc.cpp. uncrustify drc.cpp

Preparing work on trapezoidal pad DRC: cleaning code. some comments and translations added in drc.cpp. uncrustify drc.cpp

Gerbview: fixed a bug when more than one layer loaded: sometimes polygons were drawn in a bad color (including black, so sometimes polygons disappear)
Code cleaning.

Gerbview: fixed a bug when more than one layer loaded:  sometimes polygond were drawn in a bad color (including black, so sometimes polygons disappear)

Fixed some issues about trapezoidal pads. Better pad editor dialog. fixed other (very) minor bugs. Code cleaning.
Plaese note plot functions are not yet updated, so minor differences can be seen between pads on screen and plot files.

Fixed some issues about trapezoidal pads. Better pad editor dialog. fixed other (very) minor bugs. Code cleaning

Due to (minor) problems  in block rotate/mirror (refesh display and undo/redo) go back to old behavior (command immediately executed , and do not entering a move block after a block mirror/rotate)

Due to (minor) problems  in block rotate/mirror (display and undo/redo) go back to old behavior (command immediately executed , and do not entering a move block aftera block mirror/rotate)

Some minor issues (sheet and pin sheet rotate from menu) must be added

Design rules dialog: use wxLC_VIRTUAL options in wxListBoxes to speed  up nets lists display (which was *very long* for boards with a lot of nets)

Design rule dialog: use wxLC_VIRTUAL options in wxListBoxes tu speed  up nets lists display (which was very long for board with a lot of nets)

The old code is not removed. See basicframe.cpp to use old or new kicad abour dialog

Try to fix block selection issue with some windows managers.

Try to fix block selection issue with some windows managers.