ISPN-3838 L1 entry added by ST when already invalidated

* Removed L1OnRehash as it is broken with a concurrent modification
Replace usage of deprecated protostream api
Remove an out of date TODO
WIP ISPN-3917 Filter objects using the query DSL (without using an index)
WIP ISPN-3917 remove unused class
WIP ISPN-3917
WIP Remove unused class
ISPN-3917 Remove magic constants from WrappedMessageTagHandler
wip
wip
DSL revamp
Upgrade protostream
wip2