FEM: unit tests, move module fem common test module to common test module

src/Mod/Fem/CMakeLists.txt

@@ -116,7 +116,7 @@ SET(FemSolverFenics_SRCS
 SET(FemTests_SRCS
     femtest/__init__.py
     femtest/testccxtools.py
-    femtest/testfemcommon.py
+    femtest/testcommon.py
     femtest/testsolverframework.py
     femtest/testtools.py
 )

src/Mod/Fem/TestFem.py

@@ -27,6 +27,6 @@
 
 # the order should be as follows:
 # common-, object-, mesh-, inout-, ccxtools-, solverframworktests
-from femtest.testfemcommon import FemTest
+from femtest.testcommon import FemTest
 from femtest.testccxtools import FemCcxAnalysisTest
 from femtest.testsolverframework import SolverFrameWorkTest