STYLE: use Time::printExecutionTime() method

- makes format of ExecutionTime = ... output configurable (#788)
  and reduces code clutter.

STYLE: more consistent line-breaks after "End" tag

applications/utilities/postProcessing/optimisation/computeSensitivities/computeSensitivities.C

@@ -66,9 +66,9 @@ int main(int argc, char *argv[])
 
     runTime.printExecutionTime(Info);
 
-    Info<< "End" << endl;
+    Info<< "End\n" << endl;
 
-    return(0);
+    return 0;
 }
 
 

applications/utilities/postProcessing/optimisation/cumulativeDisplacement/cumulativeDisplacement.C

@@ -154,7 +154,7 @@ int main(int argc, char *argv[])
 
     Info<< "End\n" << endl;
 
-    return(0);
+    return 0;
 }