Code clarification about 3 confusing functions to display info: DisplayInfo (displaying a message info) and class members DisplayInfo and Display_Infos doing the same thing (see changelog)

* Add default OS program install path(s) to search path list as fail safe.
* Remove unnecessary wxGetApp calls in WinEDA_App class methods.
* Remove non-standard message panel font and changed background to system menu color.
* Remove italic fonts from menus.
* Remove non-standard font in Kicad app project tree.
* Remove font selection dialog menu items from apps for removed fonts.
* Remove all global variables and settings associated with the removed fonts.
* Fixed PCBNew export and import library file dialog response tests from wxCANCEL to wxID_CANCEL.

better handling of libraries paths (removed g_RealLibraryBuffer that had no sense with the new code), mainly in Eeschema
TODO: better handling of user lib paths (more than one path)

Needed with the new code using wxFileName

Needed with the new code using wxFileName

Add helpers for inserting paths to and removing paths from search list.
Moved user defined path before default library paths in search list.
Renamed m_Draw_Auxiliary_Axis to DrawAuxiliaryAxis.
Changed parameter to fix wxDC set mode from FALSE to GR_COPY.
Minor wxDC zoom improvements.

UpdateStatusBar() not callable from RedrawActiveWindow on MAC, and it is not the right place to call it for other OSes even though it might work on those other OSes such as Windows and Linux

Fixed: inconsistencies in dialog_eeschema_config.cpp (delete and add/insert do not have the same behavior: add/insert cannot be cancelled )

broken SCH_COMPONENT::GetRotationMiroir() rewritten (problem when editing a mirrored and rotated component fixed)

Added application method to fix searching for user libraries.
Fixed documentation search path bug.
Moved auto pan setting from draw frame to draw panel were it is defined.
Some minor device context drawing changes.

eeschema: fixed: void history file list in menu

eeschema: fixed: void history file list in menu

Added template subdirectory to library search path list.
Removed PARAM_CFG_BASE empty destructor to prevent GCC warning.
Set timeout to 0 on DisplayInfo call to prevent debug assertion in eeschema/files-io.cpp.
Declare PARAM_CFG_ARRAY for future project file object implementation.
Removed unnecessary COMMON_GLOBL definition in gr_basic.h and param_config.h.