Eliminate use of EHCacheUtils
Further isolate DocumentSearchCache from master-specific search details, through use of CacheSearcher; now
DocumentSearchCache only sees UniqueIds of search result documents, without ever coming into contact with the
actual, master-specific, documents or the document cache.
Comment & javadoc cleanup
Update caching position and security masters to new constructor arg order
Fill in specialised document and search caching code for some Ehcaching masters (config, exchange, holiday,
portfolio, region, user)
Constructor argument order in AbstractEHCachingMaster
Update Ehcaching tests with new constructor arguments
Temporary hardcoding of EHcaching masters (security, position, portfolio, config, exchange, holiday, region) for
management UI.