This implements the pad import/export to the board's master pad setting
in the GAL canvases.
Implemented as a new GAL tool: PAD_TOOL.
It uses the same dialog, which has been split out into its own files in
pcbnew/dialogs, rather than along with frame methods in
pcbnew/globaleditpad.cpp.
Fixes: lp:1619304
* https://bugs.launchpad.net/kicad/+bug/1619304
This feature was not reliably available: neither pl_editor nor GAL supported
it. It has been replaced over the past few commits with a new zoom-to-selection
tool available in all applications and modes.
* Fix grid select box update bug on context menu.
* Fix via size and track width select box update bugs.
* Fix layer pair indicator button update bug.
* Fix auto track width tool bar control enable bug.
* Fix via size and track width select status bug in context menu.
* Fix layer select box and layer control widget select bug when current
layer is removed.
* Add virtual function to notify objects derived from EDA_DRAW_FRAME that
the units setting has changed.
* Coding policy class naming fixes.
* Add methods to read and write project file parameters using dynamically defined list.
* Remove all global variables defined in CVPcb code.
* Dynamically define project file settings so class member variables can be used.
* Separate reading and writing application settings from project file settings.
* Make application UI objects and dialogs respect system UI font.
* Remove non-standard widget colors from CVPcb dialogs.
* Changed CVPcb object link list implementation to use wxList.
* Changed project library and path dialog to make OK button save project file instead of confusing "Save Cfg" button.
* Eliminate some duplicate file wildcard and extension definitions.
* The usual code reformatting, commenting, and spelling fixes.
Jeff Young
John Beard
Simon Richter
Chris Pavlina
jean-pierre charras
Dick Hollenbeck
Wayne Stambaugh
dickelbeck