Gui Enhancement: Support for macros in AppUserHome/Macro

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What?
It was suggested that the macros should be moved to AppUserHome/Macro
http://forum.freecadweb.org/viewtopic.php?f=10&t=13433

Solution:
The solution is backwards compatible in the sense that if you have a running
configuration, updating should not change anything.

For new installations the macro directory will default to AppUserHome/Macro. However
this would break all the installation scripts (probably also ME's plugin manager).

Conflicts:
	src/Mod/Path/Gui/AppPathGuiPy.cpp

src/Gui/PythonConsole.cpp

@@ -1196,7 +1196,7 @@ void PythonConsole::onClearConsole()
 void PythonConsole::onSaveHistoryAs()
 {
     QString cMacroPath = QString::fromUtf8(getDefaultParameter()->GetGroup( "Macro" )->
-        GetASCII("MacroPath",App::Application::getUserAppDataDir().c_str()).c_str());
+        GetASCII("MacroPath",App::Application::getUserMacroDir().c_str()).c_str());
     QString fn = FileDialog::getSaveFileName(this, tr("Save History"), cMacroPath,
         QString::fromLatin1("%1 (*.FCMacro *.py)").arg(tr("Macro Files")));
     if (!fn.isEmpty()) {