Add confirmation page when importing blocked domains (#1773)

* Move glitch-soc-specific strings to glitch-soc-specific locale files

* Add confirmation page when importing blocked domains

spec/controllers/admin/domain_blocks_controller_spec.rb

@@ -16,6 +16,27 @@ RSpec.describe Admin::DomainBlocksController, type: :controller do
     end
   end
 
+  describe 'POST #batch' do
+    it 'blocks the domains when succeeded to save' do
+      allow(DomainBlockWorker).to receive(:perform_async).and_return(true)
+
+      post :batch, params: {
+        save: '',
+        form_domain_block_batch: {
+          domain_blocks_attributes: {
+            '0' => { enabled: '1', domain: 'example.com', severity: 'silence' },
+            '1' => { enabled: '0', domain: 'mastodon.social', severity: 'suspend' },
+            '2' => { enabled: '1', domain: 'mastodon.online', severity: 'suspend' }
+          }
+        }
+      }
+
+      expect(DomainBlockWorker).to have_received(:perform_async).exactly(2).times
+      expect(flash[:notice]).to eq I18n.t('admin.domain_blocks.created_msg')
+      expect(response).to redirect_to(admin_instances_path(limited: '1'))
+    end
+  end
+
   describe 'POST #create' do
     it 'blocks the domain when succeeded to save' do
       allow(DomainBlockWorker).to receive(:perform_async).and_return(true)