Metamodel module work in progress

client/src/app/app.module.ts

client/src/app/app.reducer.ts

client/src/app/custom-route-serializer.ts

client/src/app/metamodel/metamodel.module.ts

client/src/app/metamodel/store/actions/attribute.actions.ts

...rc/app/metamodel/store/actions/criteria-family.actions.ts

client/src/app/metamodel/store/actions/database.actions.ts

...src/app/metamodel/store/actions/dataset-family.actions.ts

client/src/app/metamodel/store/actions/dataset.actions.ts

client/src/app/metamodel/store/actions/group.actions.ts

client/src/app/metamodel/store/actions/instance.actions.ts

...rc/app/metamodel/store/actions/output-category.actions.ts

.../src/app/metamodel/store/actions/output-family.actions.ts

client/src/app/metamodel/store/actions/survey.actions.ts

client/src/app/metamodel/store/models/attribute.model.ts

...t/src/app/metamodel/store/models/criteria-family.model.ts

...nt/src/app/metamodel/store/models/dataset-family.model.ts

client/src/app/metamodel/store/models/dataset.model.ts

...t/src/app/metamodel/store/models/db-table-column.model.ts

client/src/app/metamodel/store/models/group.model.ts