CommandRunner reads output per line.
Write output to an interface.
Remove dead code (TestHtmlFormatter)
Explicitly mark MultipleTestSystemFactory as override.
Make TestSystemListener methods private to MultipleTestsRunner (using inner class).
Add line endings to log.
Remove print lines from PageDriver
Provide callback interface for ExecutionLog.
Forward exception from test system stop event to execution log.
Invoke log publication from TestResponder.
Merge pull request #431 from amolenaar/commandrunneroutput

no "captured output" under files/ErrorLogs when running tests via REST interface