Fix compatibility issues with old xpm icons.
Add or update .xpm and .ico files for shortcuts and taskbars
Remove artwork folder.

* Move various locate functions into the appropriate board item object.
* Unified best zoom for all frames derived from PCB_BASE_FRAME.
* Remove track.cpp as it is no longer needed.
* Dead code removal.
* Remove scary frame window pointer member from board item objects.
* Add draw bounding box to gerber draw item for debugging purposes.

* Replace use of wxICON by new icons declaration.
* Remove unused files.
* Fix filenames inconsistencies between old and new icons.
* dialog_erc handle variable size icons in erc matrix.

Remove or move old .ico and .pgn files and add new icons (.ico files and .png files) in bitmaps_png/icons and bitmaps_xpm/icons
.png files and .ico are used to build desktop shortcuts
Handle variable size bitmaps in kicad.

Fix minor other issues.
Remove unused files.

* Add hotkey fast switch to two grids: for place and trace
	Alt+"1" - switch grid for place module
	Alt+"2" - switch grid for trace
  This two grid set in dialog - menu Preferences->Dimensions->Grid.
* Add hotkey switch grid:
	"`" - switch to next grid
	Ctrl+"`" - switch to previous grid
* Add hotkey switch track width:
	"W" - switch to next track width
	Ctrl+"W" - switch to previous track width
cmakemodules:
* Add GOST to KICAD_BUILD_VERSION if define KICAD_GOST.

* Added checks for Inkscape and pngcrush when MAINTAIN_PNG mode is enabled.
* Rebuild PNGs with transparent background.

* Changed <wx-2.8/xml/xml.h> to "xnode.h" in pcbnew_config.cpp to fix bug
  when building against wxWidgets 2.9 and above.
* Convert broken wxXmlNode code to use XNODE.
* Overloaded XNODE constructor for creating child nodes.
* Translate French naming conventions.
* Translate French comments.
* Remove tabs from several source files.
* Coding style policy and Doxygen comment fixes.

Remove minizip from kicad sources. Useless because now (and since a long time) wxWidgets supports full zip file read/write, and minizip build creates problems under Windows, due to zlib not always installed.

* Add hotkey "P" - place item
* Add record and play macros for sequence hotkey.
Macros set to numeric key 0..9.
<Ctrl>+<numkey> - start record macros
<hotkey> <mouse move> ... <hotkey>|<mouse place>
<Ctrl>+<numkey> - end record macros
<numkey> - play macros
* Add menu save/read macros to/from xml-file
* Add configure rotate angle for rotate module: 45 or 90 deg.
* fix segfault when move/drag segment if disconnected to pad

Code cleaning: rename DIALOG_LOAD_ERROR (a stupid name)  class to the more understandable  HTML_MESSAGE_BOX.
rename corresponding files are move them in a better place.

Eeschema:
 *   Graphic texts ans labels: fix fully broken undo/redo code relative to the way undo/redo command
 *   handles changes (maintly move) for labels
 *   Fix minor bug for undo command relative to block rotate
 *   Remove dead code.
 *   Add new class BITMAP_BASE, and (for Eeschema) SCH_BITMAP to handle bitmap images in schematic.
      Remember plot Bitmaps in not possble with all plotters.

* Rename all ADD_MENUITEM_* functions to AddMenuItem and move them to
  wxstruct.h since they are used by the Kicad main frame classes.
* Move SET_BITMAP and SETBITMAPS definitions to wxstruct.h.
* Fix a bug in SET_BITMAPS that prevented enabling menu item images on
  OSX.
* Rename MsgItem to EDA_MSG_ITEM.
* Remove redundant includes from modified files.
* Doxygen and coding style policy fixes.

Add a new schematic item: SCH_BITMAP. One can insert now images in a schematic.
Add Fabrizio Tappero as contributor  in Kicad About dialog

* Warn the user that fields with no value and not it the field template list
  will be removed from the component before exiting the edit component in
  schematic dialog.
* Add a function to TEMPLATES class to check if template list contains a
  field with a given name.
* Move the function to display the edit component in schematic dialog into
  the SCH_EDIT_FRAME class.
* Doxygen and coding style policy fixes.