test updates
CollectionWebTestCase -> IslandoraCollectionWebTestCase
updated for changes to collection web test case
Merge pull request #1 from Islandora/7.x

7.x updates
7.x binary tests
Merge pull request #2 from Islandora/7.x

7.x update
fixes for image assertions
datastream validation
Merge pull request #75 from qadan/7.x

7.x datastream validation