Make ExecutionReport.finalCounts private
Move page count functionality to parent class.
Count failed pages in XmlFormatter, similar is done for suite formatter.
Use Page counts for error reporting.
Increment test counter before executing the test.
Remove unused method.
Use page error count in XmlFormatter, same as suite formatters.
Make exit code in line with number of tests in error
Merge pull request #315 from amolenaar/xml-formatter

XML-report doesn't report same result as html