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.)
It doesn't make sense to check minLen and then call SetMinSize to maxLen
so this must be a copy-paste error.
Introduced in f681b86abd
Found with Coverity.