removed one space in prov.ttl.tut (readability)

another whitespace modification in datasets

moved up gcis:isImageOf in turtle for images

rearranged content of turtle for figures (readability)

removed whitespace in templates/prov.ttl.tut (readability)

Rearranged turtle for chapters (consistency)

added whitespace in turtle for contributors (readability)

Improved turtle readability
Merge pull request #36 from justgo129/master

Improved turtle readability