Merge pull request #188 from MIT-Mobile/3.6/dev-intrepid-svoigt

Renamed LibariesItem to WorldcatItem
Removed searchDisplayController and added manual searchBar etc in libraries home VC. Needed to present UI as described in docs
Search controller and search results VC implemented with infinite scrolling
Fixes for renaming MITLibrariesWorldcatItem
Search bar refactored to have cancel button always active
Cleanup of unused code
Merge pull request #191 from MIT-Mobile/3.6/ross-libraries-search

3.6/ross libraries search
Added get user webcall