NOJIRA Remove debug msg
PROV-1070 Rework print template caching using ExternalCache
PROV-1070 Replace CompositeCache with ExternalCache in Browse and Search caches to save memory. These are not accessed multiple times in a request anyway.
PROV-1070 Rework caching for the last few instances of Zend_Cache I could find

- ProgressBar
- OAIPMHService
- recentlyViewed in BaseModel
- EuroBank conversion rates
PROV-1070 Move cats and rss viewer widgets over to ExternalCache