[NEW] Level projector can now create a projector for the nodal loads also conditionally. This means that the contact on/off may be regulated by some computed field. 


git-svn-id: svn://svn.code.sf.net/p/elmerfem/code/trunk@7058 04224531-1f84-46d8-96ce-875b9e37dce3
Test case for elastic contact with frictional heating.


git-svn-id: svn://svn.code.sf.net/p/elmerfem/code/trunk@7059 04224531-1f84-46d8-96ce-875b9e37dce3