small fixes.


git-svn-id: svn://svn.code.sf.net/p/elmerfem/code/trunk@6918 04224531-1f84-46d8-96ce-875b9e37dce3
Make Discontinuous mesh, if requested, only for the first loaded mesh.


git-svn-id: svn://svn.code.sf.net/p/elmerfem/code/trunk@6919 04224531-1f84-46d8-96ce-875b9e37dce3