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.

* Improve main (top) toolbar button organization.
* Add commands from main toolbar to menubar that were not already defined.

* Add USE_IMAGES_IN_MENUS definition to override the default platform
  behavior for adding images to menu items.
* Update COMPILING.txt to document how to use USE_IMAGES_IN_MENUS.
* Fix Windows segfault when creating language selection submenu introduced
  by new bitmap code in r3087.
* Changed per email from JP from CVPcb to CvPcb because I'm getting old and
  blind and misread the email.
* Lot's of Doxygen comment and coding style policy fixes.

* Check user write permissions before saving project, board, and footprint
  library files.
* Append read only to file name and path in title bar when the user
  does not have write privileges.
* Rename class WinEDA_ModuleEditFrame to FOOTPRINT_EDIT_FRAME.
* Lot's of Doxygen comment and coding style policy fixes.

* Check user write permissions before saving project and net list files.
* Append read only to file name and path in title bar when the user
  does not have write privileges.
* Don't display file dialog every time the net list or project file is
  saved.
* Add save as and save project file as commands.
* Make capitalization of CVPcb consistent in all user strings.
* Doxygen comment and coding style policy fixes.

Pcbnew: finish work on Length Die (displays track length, and fulll  length and length die for tracks ending on pads having a length die > 0 )

* Check user write permissions before saving project file.
* Append read only to file name and path in title bar when the user
  does not have write privileges.
* Remove displaying file dialog every time the project file is saved.
* Doxygen comment and coding style policy fixes.

Minor fixes and enhancements.

* Add general purpose user write permission test function to base
  window class.
* Check user write permissions before saving project, schematic and
  library files.
* Remove displaying file dialog every time the project file is saved.
* Display absolute paths for non-root sheet file in title bar.
* Remove redundant command table entry from schematic editor.
* Remove unused variables to fix GCC 4.6 warnings.
* The usual Doxygen comment and coding style policy fixes.

* Disable save library command when user does not have permission to write
  the active library.
* Append the active library file name displayed in the title bar with read
  only when the user does not have write permission.
* Test the selected folder permissions when user chooses the save library
  as command.
* The obligatory coding style policy fixes.