LDEV-4415 Add tool output weight. Rewrite activity evaluations. Activity evaluations have been implemented as a list, even though always only the first element is meaningful. They were rewritten as one-to-one association with Activity. The primary key is activity ID now instead of DB generated UID. Weight column was added. Server version was bumped so a filter can pick up activityEvaluations -> evaluation field rename when importing older LDs. A convention without date was used for server version as it seems good enough. Unnecessary versions of clients were removed from configuration table as they server the abandoned Flash authoring.