FEM: code formating, get rid of tabs

src/Mod/Fem/CMakeLists.txt

@@ -126,7 +126,7 @@ INSTALL(
         PyGui/TaskPanelFemMeshBoundaryLayer.ui
         PyGui/TaskPanelFemMeshGmsh.ui
         PyGui/TaskPanelFemMeshGroup.ui
-	PyGui/TaskPanelFemMeshGroupXDMFExport.ui
+        PyGui/TaskPanelFemMeshGroupXDMFExport.ui
         PyGui/TaskPanelFemMeshRegion.ui
         PyGui/TaskPanelFemResultShow.ui
         PyGui/TaskPanelFemSolverCalculix.ui

src/Mod/Fem/Gui/Resources/Fem.qrc

@@ -28,7 +28,7 @@
         <file>icons/fem-control-solver.svg</file>
         <file>icons/fem-cylinder.svg</file>
         <file>icons/fem-data.svg</file>
-	<file>icons/fem-femmesh-boundary-layer.svg</file>
+        <file>icons/fem-femmesh-boundary-layer.svg</file>
         <file>icons/fem-femmesh-clear-mesh.svg</file>
         <file>icons/fem-femmesh-create-node-by-poly.svg</file>
         <file>icons/fem-femmesh-from-shape.svg</file>

src/Mod/Fem/Gui/Workbench.cpp

@@ -96,7 +96,7 @@ Gui::ToolBarItem* Workbench::setupToolBars() const
      *mesh << "FEM_MeshNetgenFromShape"
            << "FEM_MeshGmshFromShape"
            << "Separator"
-	   << "FEM_MeshBoundaryLayer"
+           << "FEM_MeshBoundaryLayer"
            << "FEM_MeshRegion"
            << "FEM_MeshGroup"
            << "Separator"