Merge branch 'add-filtered-search-group-issues-ce' into 'master'

app/assets/javascripts/dispatcher.js

app/assets/javascripts/droplab/plugins/ajax.js

app/assets/javascripts/filtered_search/dropdown_non_user.js

app/assets/javascripts/filtered_search/dropdown_utils.js

...ripts/filtered_search/filtered_search_dropdown_manager.js

...ts/javascripts/filtered_search/filtered_search_manager.js

...ascripts/filtered_search/filtered_search_visual_tokens.js

app/assets/javascripts/labels_select.js

app/assets/javascripts/lib/utils/ajax_cache.js

app/helpers/search_helper.rb

app/views/groups/issues.html.haml

app/views/shared/issuable/_search_bar.html.haml

...gelogs/unreleased/add-filtered-search-group-issues-ce.yml

spec/features/groups/issues_spec.rb

spec/helpers/search_helper_spec.rb

spec/javascripts/droplab/plugins/ajax_spec.js

spec/javascripts/filtered_search/dropdown_utils_spec.js

...pts/filtered_search/filtered_search_visual_tokens_spec.js

spec/javascripts/lib/utils/ajax_cache_spec.js