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.

Minor code change (which removes a SWIG warning)

* 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

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.

Pcbnew: fix some issues when using python scripting (remove outdated SEG_ZONE item, fix broken access to netclass, track width and via size lists, add missing access to zones)
Update listPcb.py to show how to access zones.

Also update main toolbar track width and via size info in pns router mode, when starting a track, and other very minor update issue.

change name TEXTE_MODULE::MirrorWithModule to TEXTE_MODULE::MirrorTransformWithModule, because it is a function specific  to a footprint transform in modedit.
change also name TEXTE_MODULE::RotateWithModule to TEXTE_MODULE::RotateTransformWithModule for same reason.
Pcbnew: fix Bug #1374484 (text changes position when module is flipped and rotated). Fix also some bugs in modedit, in block commands.

Pcbnew: fix Bug #1373468 (Non Copper Zones Properties  dialog "Layer selection" empty) (Linux specific)

Pcbnew: add append board function, only available when Pcbnew is run in standalone mode (outside a project), to allow a basic panelization.
(this function is not compatible with a project, because it breaks the coherency with the schematic)

Minor other fixes.

Minor fixes: specctra export: skip malformed circles (having a radius = 0)  in board outline creation, which can crash 3d-viewer or vrml export.
dialog_fp_lib_table: remember during a session the last open table (global or local).
drawing_tool: fix compil warning
Update demos.

* Set wxGrid tab behavior to leave grid when using the tab key.
* Lots of coding policy fixes.

IO_MGR::PCB_FILE_T IO_MGR::GuessPluginTypeFromLibPath() : better test for KICAD type footprint libraries: previoulsy, just test if a library name ends with .pretty, which is not enough.
GitHub lib names also ends  by .pretty, so also test if a lib name does not start by http (which could be a GitHub lib name).

Eeschema: back to KICAD_KEEPCASE option, to find parts in lib, when using case sensitive option (default).
Schematic component properties dialog: add 2 helper buttons to manage the chip name (name of the corresponding part in lib)
- a browse button to chose an other chip name
- a test button, to know if the part exists. If not existing, list the parts found when searching using a case insensitive comparison.

Patch for the Python footprint wizard helpers. This adds a few more drawing functions, such as for circles, and also uses a matrix-based transform stack with greatly simplifies constructing footprints consisting of regularly spaced elements (e.g. in lines, grids, circles, or some list of points that you specify).
This fixes bug #1366299