Replace the int of the 'resolve' argument of several functions with a proper enum class.
* This avoids the inconsistencies in client code where often true/false is passed when an int is expected
* This avoids the use of magic numbers like 0, 1, 2 or the undocumented 3
I was informed that Gmsh names itself with a capital G. I had a look and in FEM it is already named Gmsh, but not in the Mesh WB. Therefore this PR.
(The other changes than the pure renaming was automatically done by Qt's designer.)
The maximum edge length for the Mefisto mesher is always set in the accept() method so that effectively user input is always ignored.
There is now a button Estimate to guess a good default value. And user input is no longer ingored