Admin accounts controller cleanup (#1664)

* Remove unused account_params method in admin/accounts controller

* Introduce AccountFilter to find accounts

* Use AccountFilter in admin/accounts controller

* Use more restful routes admin silence and suspension area

* Add admin/silences and admin/suspensions controllers

spec/controllers/admin/silences_controller_spec.rb

@@ -0,0 +1,24 @@
+require 'rails_helper'
+
+describe Admin::SilencesController do
+  let(:account) { Fabricate(:account) }
+  before do
+    sign_in Fabricate(:user, admin: true), scope: :user
+  end
+
+  describe 'POST #create' do
+    it 'redirects to admin accounts page' do
+      post :create, params: { account_id: account.id }
+
+      expect(response).to redirect_to(admin_accounts_path)
+    end
+  end
+
+  describe 'DELETE #destroy' do
+    it 'redirects to admin accounts page' do
+      delete :destroy, params: { account_id: account.id }
+
+      expect(response).to redirect_to(admin_accounts_path)
+    end
+  end
+end