* Move client DB opening logic to CLI
* Move restoration db open logic to CLI
This adds KeyValueDBHandler which handles opening a new database, thus allow us to move the restoration db open logic
out of ethcore.
* Move rocksdb's compactionprofile conversion to CLI
* Move kvdb_rocksdb as test dependency for ethcore
* Fix tests due to interface change
* Fix service tests
* Remove unused migration dep for ethcore
c039ab79b5