Libview and Modview: fix issues relative to hotkeys (hardcoded keys instead of user defined keys) and not working tools and popup menus.
Fix also some minor coding style issues.

Add FILE_NAME_WITH_PATH_CHAR_VALIDATOR, a custom wxValidator which allows file names with paths, in schematic sheet editor
( FILE_NAME_CHAR_VALIDATOR previously used in this dialog does not allow chars used in path names, like / and on Windows \ and : )

Minor code change (which removes a SWIG warning)

* Remove CMakeParseArguments.cmake to use the version that ships with CMake.
* Remove FindPackageHandleStandardArgs.cmake to use the version that ships
  with CMake.
* Remove FindPythonLibs.cmake to use the version that ships with CMake.
* Edit FindPythonInterp.cmake to use the stock CMake version of
  FindPackageHandleStandardArgs.cmake since the local version was removed.

* Use the proper verb Annotate in the Annotate dialog for the action button
* Used the proper verb Generate in the Netlist dialog for the action button
* Fix ERC dialog title to be "Electrical Rules Checker".
* Fix all usages of "Erc" to "ERC" consistently in ERC dialog.
* Move action buttons to bottom of ERC dialog and change Del Markers to
  Delete Markers.
* Add tooltips to ERC options matrix buttons to indicate their current state.
* Cleanup ERC options code that for some reason decided to delete the button
  and recreate it instead of just updating it's bitmap directly.
* Rename "Test ERC" to "Run" to describe what it's actually doing properly

* Fix creation of single app bundle with respect to scripting support.
* Cleanup scripting search paths for OSX.
* Fix some small CMake bugs from previous OSX build change.
* Optimize bundle file structure to be consistent with Apple specs.
* Add helper script for compiling wxWidgets and wxPython
* Update OSX build instructions.

Fix text in Get and Move Footprint Dialog
Fix right click in board editor options

Fix dialog title to be "Electrical Rules Checker" to match everywhere else.
Fix all usages of "Erc" to "ERC" consistently.
Move action buttons to bottom of dialog, make Del Markers actually say Delete Markers.
Add tooltips to ERC options matrix buttons to indicate what their current state is, for newb friendliness.
Cleanup ERC options code that for some reason decided to delete the button and recreate it instead of just updating it's bitmap directly.
Rename "Test Erc" to "Run" because you are running ERC and not testing it.
Fix improper usage of SetLabel on a wxTextCtrl instead of SetValue so the ERC totals now work!

Cleaning 3 svg files (no icon change)
Very minor other changes.

* Remove obsolete settings from Doxygen configuration file.
* Fix some Doxygen warnings.
* Add the board edge segment snapping to developers road map.
* Fix some coding style issues in CMakeLists.txt

Handles % macro expansion in user texts inside pcb modules.
At the moment the following are available:
%%      A plain %
%R      Insert the reference
%V      Insert the value

* Compile all binaries into a single application bundle.
* Use CMake BundleUtilities to make application bundle relocatable.
* Restructure build output to directly create an image file.
* Fix default search paths.
* Set KIGITHUB environment variable.
* Added patch to fix wxWidgets so names for OSX.

BOARD::Add(): fix an issue for tracks: parent not set (could be an issue only in python scripts, because the parent is set by the constructor)
*.i : fix coding style issues.
python method: add BOARD_ITEM Duplicate, which is a wrapper to Clone(). ( defined as Cast_to_BOARD_ITEM(selt.Clone()).Cast() )
update some .py examples.