No need to use ontology predicate. Reasoning should always retrieve labels using the skos:prefLabel
Revert "No need to use ontology predicate. Reasoning should always retrieve labels using the skos:prefLabel"

This reverts commit 396f9fe50dc431f89f94f2f6c95e5204246e8143.
Typo in standard predicates.
Included retrieval of synonyms in class. Useful for label generation in parsing.
Trailing white spaces fixed.
Improved performance in missin label generation. Ontology parsing. (close #8)
Merge branch 'master' into label_generation_patches

Conflicts:
	lib/ontologies_linked_data/models/ontology_submission.rb