test
add TestCategoryTree including a test of eliminateAllSingletons method
add test for associateProducts method
add test for CategoryTree.refresh()
add test for CategoryTree.refresh() -- missed one file
add test for CategoryTree.findEquivalenceClasses
Fixed the string comparison issue in TypedValue
#71 fixed dangerous null return and clarified contract in javadoc.
Merge branch 'Issue0071'
reverting metadata files that I accidentally modified
#71 Linked up TestScoredAttribute properly, I will write the tests over
the weekend.
#62 Added some tests, fixed some bugs.
Merge branch 'master' of https://github.com/prmr/Creco
#62 Finished tests.
Merge branch 'Issue0062'

Conflicts:
	.classpath
#90 Added NominalCorrelator
#90 renamed AttributeCorrelator to NumericCorrelator
checkboxes clickable, labels bigger, image holder and description holder added, query is blue
Merge branch 'master' of https://github.com/prmr/Creco.git into Issue90_NominalCorrelation
add spinner