Update waves

Created by: acrovato

Context

This pull request brings the last developments from the flow module as well as some upgrade to waves.

Major changes in flow

• flow is now able to compute 3D flows
• The Jacobian (tangent) matrix for the Netwton method is now fully analytical
• The adjacent elements identification is now based on ```std::unordered_set````

Major changes in waves

• tbox and fwk are now included in a namespace
• waves is now fully included in a namespace
• All elements now have a private memory (Mem) which can be publicly accessed
• All elements now have a cache including Gauss points (Gauss) which can be publicly accessed
• MshDeformation now uses a linear elasticity solver
• MshCrack class implemented (creates duplicate internal boundaries in meshes)

Test

The ctest battery has been run on gaston, 100% tests passed under 110s.

Future work

• Use automated indentation rules for the whole code
• Move methods using VTK outside of MshData
• Clean tbox (mainly MshData, Tri3, Tera4 and Hex8)

tbox/src/wGauss.h

@@ -23,16 +23,16 @@ public:
 
 	// [RB] The following routines are used by Kim and smell rather bad
 	// [AC] Agreed. If needed, he can now access p and w since they are public
-	std::vector<Pt> getP() 
-	{
-		return p;
-		//return std::vector<Pt>(); 
-	}
-    std::vector<double> getW()
-	{
-		return w;
-		//return std::vector<double>();
-	}
+	//std::vector<Pt> getP() 
+	//{
+	//	return p;
+	//	//return std::vector<Pt>(); 
+	//}
+    //std::vector<double> getW()
+	//{
+	//	return w;
+	//	//return std::vector<double>();
+	//}
 };
 
 }