Merge branch 'feature/fix-master' into 'master'

Fix build and execution of finite-strain-elasticity

See merge request !61

src/CMakeLists.txt

-if(ADOLC_FOUND AND IPOPT_FOUND AND PYTHONLIBS_FOUND AND dune-uggrid_FOUND)
+if(ADOLC_FOUND AND IPOPT_FOUND AND Python3_FOUND AND dune-uggrid_FOUND)
   set(programs linear-elasticity)
 
   # When combining dune-common 2.7 and dune-fufem 2.8, no cmake test for the

src/finite-strain-elasticity.cc

@@ -73,6 +73,8 @@ int main (int argc, char *argv[]) try
 
   // parse data file
   ParameterTree parameterSet;
+  if (argc < 2)
+    DUNE_THROW(Exception, "Usage: ./finite-strain-elasticity <parameter file>");
 
   ParameterTreeParser::readINITree(argv[1], parameterSet);