FEM: move python modules:

- object modules to new PyObjects directory
- Gui modules to new PyGui directory

src/Mod/Fem/PyObjects/_FemShellThickness.py

@@ -0,0 +1,40 @@
+# ***************************************************************************
+# *                                                                         *
+# *   Copyright (c) 2015 - Bernd Hahnebach <bernd@bimstatik.org>            *
+# *                                                                         *
+# *   This program is free software; you can redistribute it and/or modify  *
+# *   it under the terms of the GNU Lesser General Public License (LGPL)    *
+# *   as published by the Free Software Foundation; either version 2 of     *
+# *   the License, or (at your option) any later version.                   *
+# *   for detail see the LICENCE text file.                                 *
+# *                                                                         *
+# *   This program is distributed in the hope that it will be useful,       *
+# *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
+# *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
+# *   GNU Library General Public License for more details.                  *
+# *                                                                         *
+# *   You should have received a copy of the GNU Library General Public     *
+# *   License along with this program; if not, write to the Free Software   *
+# *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  *
+# *   USA                                                                   *
+# *                                                                         *
+# ***************************************************************************
+
+__title__ = "_FemShellThickness"
+__author__ = "Bernd Hahnebach"
+__url__ = "http://www.freecadweb.org"
+
+## @package FemShellThickness
+#  \ingroup FEM
+
+
+class _FemShellThickness:
+    "The FemShellThickness object"
+    def __init__(self, obj):
+        obj.addProperty("App::PropertyLength", "Thickness", "ShellThickness", "set thickness of the shell elements")
+        obj.addProperty("App::PropertyLinkSubList", "References", "ShellThickness", "List of shell thickness shapes")
+        obj.Proxy = self
+        self.Type = "FemShellThickness"
+
+    def execute(self, obj):
+        return