WIP: Tests on search

...c/app/instance/search/containers/result.component.spec.ts

...nt/src/app/instance/search/containers/result.component.ts

...pp/instance/search/pipes/sort-by-criteria-display.spec.ts

...src/app/instance/search/pipes/sort-by-criteria-display.ts

.../app/instance/search/pipes/sort-by-output-display.spec.ts

...t/src/app/instance/search/pipes/sort-by-output-display.ts

client/src/app/instance/search/search-routing.module.ts

client/src/app/instance/search/search.component.spec.ts

client/src/app/instance/search/search.component.ts

client/src/app/instance/search/search.module.ts