Merge branch 'master' into issue/401

app/controllers/concerns/paginator.rb

app/services/search_service/collection.rb

app/services/search_service/learning_object.rb

app/services/search_service/user.rb

db/migrate/20190205121252_add_status_to_complaint_reasons.rb

...3_add_state_and_suspended_at_and_reactivated_a_to_user.rb

...igrate/20190225143721_create_join_table_search_subject.rb

...90226122727_create_join_table_educational_stage_search.rb

...te/20190226122759_create_join_table_object_type_search.rb

db/migrate/20190226131445_create_join_table_search_tag.rb

...90227115926_create_join_table_language_learning_object.rb

db/migrate/20190307135526_add_times_blocked_to_user.rb

...te/20190311133847_create_join_table_languages_searches.rb

...0190313143808_add_number_of_results_column_to_searches.rb