CSV/TSV results test cases and suggested adaption of JSON results test cases

1) I added (my understanding of) what CSV and TSV test cases should return in 

  http://www.w3.org/2009/sparql/docs/tests/data-sparql11/csv-tsv-res/

the test cases are:

   http://www.w3.org/2009/sparql/docs/tests/data-sparql11/csv-tsv-res/manifest#csv01
   http://www.w3.org/2009/sparql/docs/tests/data-sparql11/csv-tsv-res/manifest#tsv01
   http://www.w3.org/2009/sparql/docs/tests/data-sparql11/csv-tsv-res/manifest#csv01
   http://www.w3.org/2009/sparql/docs/tests/data-sparql11/csv-tsv-res/manifest#tsv02

these haven't been produced automatically, so please check.

2) this brought me to some ommission in the json-res test cases ... where I 
added another different datatype literal in the test data, i.e.  here:

  http://www.w3.org/2009/sparql/docs/tests/data-sparql11/json-res/data.ttl

and updated testcases 

   http://www.w3.org/2009/sparql/docs/tests/data-sparql11/json-res/manifest#jsonres01 
   http://www.w3.org/2009/sparql/docs/tests/data-sparql11/json-res/manifest#jsonres02 
   http://www.w3.org/2009/sparql/docs/tests/data-sparql11/json-res/manifest#jsonres03 
   http://www.w3.org/2009/sparql/docs/tests/data-sparql11/json-res/manifest#jsonres04 

accordingly (note that I alsoe renamed the output files from .srj to .json). 

best,
Axel