Shifting towards constant number of particles per edge

So now each edge has the same number of particles and the weight of each
particle is calculated based on the surface of each edge compared to the
total one.

Only in 2DCyl, still to extend to other geometries.

Not perfect constant density, but the issue might be the node volume.

src/modules/mesh/inout/gmsh2/moduleMeshInputGmsh2.f90

@@ -296,20 +296,6 @@ MODULE moduleMeshInputGmsh2
 
       CLOSE(10)
 
-      ! Adjust node volume at axis
-      SELECT CASE(self%geometry)
-      CASE("Cyl")
-        DO n  = 1, self%numNodes
-          r = self%nodes(n)%obj%getCoordinates()
-          IF (r(2) == 0.D0) THEN
-            self%nodes(n)%obj%v = self%nodes(n)%obj%v * 2.0D0!2.0D0/3.0D0
-
-          END IF
-
-        END DO
-
-      END SELECT
-
       !Call mesh connectivity
       CALL self%connectMesh