Set up composite keys for cassandra.
Removed comments.
get by secondary index now working
Removed need for separate versioning keyspace
Get changed documents since and by dataset now working.
Solved since-loading for dates within the same year.
Search columnheaders for timestamps
Added keyspace suffix
Deserializing documents from column range query
Configured keyspacesuffix for master cassandra
Added check for no available host on writeDocument
Added _v2 suffix to oaipmhstorage
Lowered logging to trace for get operation
Catching bad request exception
Removed file error logging from oaipmh importer
Removed unused variables.
Merge branch 'master' into composite_key_storage
Removed spinner.
logging
Fixed bug in maxdocs for dumpimporter