FEATURE: add help text for no bookmarks in user page

spec/controllers/user_actions_controller_spec.rb

@@ -24,6 +24,28 @@ describe UserActionsController do
       expect(action["post_number"]).to eq(1)
     end
 
+    it 'renders help text if provided for self' do
+      logged_in = log_in
+
+      xhr :get, :index, filter: UserAction::LIKE, username: logged_in.username, no_results_help_key: "user_activity.no_bookmarks"
+
+      expect(response.status).to eq(200)
+      parsed = JSON.parse(response.body)
+
+      expect(parsed["no_results_help"]).to eq(I18n.t("user_activity.no_bookmarks.self"))
+
+    end
+
+    it 'renders help text for others' do
+      user = Fabricate(:user)
+      xhr :get, :index, filter: UserAction::LIKE, username: user.username, no_results_help_key: "user_activity.no_bookmarks"
+
+      expect(response.status).to eq(200)
+      parsed = JSON.parse(response.body)
+
+      expect(parsed["no_results_help"]).to eq(I18n.t("user_activity.no_bookmarks.other"))
+    end
+
     context "queued posts" do
       context "without access" do
         let(:user) { Fabricate(:user) }