StackTraceEnricherTest fails under Windows if folder contains spaces

This fixes a problem with this junit test under windows if a folder name
contains a space. In the identified location the space is replaced with
"%20" will classpath has spaces.  This fixes this problem by replacing
all "%20" with a space in the location. As the test already replaces /
and \ one more replacement should not break anything further.
Allow Scenarios with parameterized style but with empty paramter names

This fixes a bug whith parameterized style scenarios where the paramters
have no name like:

|scenario | Division _ _ _ | numerator, denominator, quotient|

Previously this only woked with two spaces between each underscore. The
regex pattern has been fixed to work now with only one space.
SyntaxErrors are now counted in the TestSummary

A table has a syntax error during parsing. I.e. a scenrio without a
name:

|scenario|

Also the table was marked as FAILED the test summary had zero failures.
Three things have been fixed now:
1. instead of FAILED the table is shown as ERROR/EXCEPTION
2. The test summary shows 1 exception
3. The error text which contains HTML is printed correctly (with the
HTML formatting)  in the table
Pass output parameters from a decision table to the implementing scenario

output parameters in a decision table have been ignored in scenarios.
Now they are available.