Add an adaptative time step for non linear static solver

Fix warning SWIG
Fix contact mpi bug

Solver/groupOfElements.h

@@ -95,6 +95,13 @@ class groupOfElements {
         }
       }
     }
+
+    inline void clearAll()
+    {
+      _vertices.clear();
+      _elements.clear();
+      _parents.clear();
+    }
 };
 
 // child elements in pElem restricted to elements who have parent in sElem

Solver/quadratureRules.h

@@ -25,7 +25,7 @@ class QuadratureBase
 };
 
 // For rigid contact no need of Gauss'integration
-// but to use classcal get function in term npts and IntPt are needed
+// but to use clasical get function in term npts and IntPt are needed
 // so use a empty gaussQuadrature rule
 class QuadratureVoid : public QuadratureBase
 {