Changeset 7153

#1215

• removed storing of valid types and valid values. This leads to wrong plugin discovery by the Persistence and Hive. Previously references to types of all available algorithms and problems were saved and needed by Hive for deserializing a MetaOpt task. Now only the actual values are saved and valid types and values are discovered after deserialization.
• added missing license headers
• added missing plugin references to plugin file