Add explicit "update()" calls to ensure Collection is saved before using. Seems to resolve DS-1408.
More minor cleanup. Add another update().
Fix DS-1408 based on hints at http://stackoverflow.com/questions/4162557/timeout-error-trying-to-lock-table-in-h2
Merge pull request #351 from DSpace/DS-1408

DS-1408: Add explicit "update()" calls to ensure Collection is saved before using later in Test code