Fixing historical time series cache invalidation
Fixing historical time series cache invalidation - fixing cache initialisation
refactoring identifierBundleCache to HierarhicalEHCache
Merge branch 'topic/hts_cache_invalidation' into develop

Conflicts:
	projects/OG-Core/src/main/java/com/opengamma/core/historicaltimeseries/impl/EHCachingHistoricalTimeSeriesSource.java