Cleanup/Freeflow
@AndreaVescovini has identified a few errors in the navierstokes environment.
- Add check for a dirichlet pressure conditions when developing the lateral advective fluxes. !1327 (merged)
- Correct the cell size in the Channel test given a grid refinement !1329 (merged)
- Remove the isWall(globalpos) function from the channel test !1328 (merged)
- In the convergence script, label the velocity components and change x-axis title !1326 (merged)
- In the convergence script, label adapt the reference order lines to show the proper slope, regardless of the number of decades shown in the plot. !1326 (merged)