Added Scalar variables to output of TopResidualDebugOutput. Now they are included in the list if e.g. "[Debug] show_top_residuals=5 []" is given in the input file. This fixes #4402.
Added tests for inclusion of scalar variables into TopResidualDebugOutput
Merge pull request #4401 from dasmy/TopResidualOutput_include_ScalarVariables

Include scalar variables in TopResidualDebugOutput