db: RepositoryCache can now handle arbitrary repositories
rest: DataApi uses DataSourceManager instead of directly the cache
db: filter chains are stored in same db as data
rest: removed custom mixin for FilterChains in JsonMixins
filter: added configurable time unit to FilterChainReference
filter: fixed NPE if filter chain does not yet exist
rest: added removal of filter chains to FilterChainApi
configuration: removed all PegelOnline static configuration

Wohooo!!