Followers-only post federation (#2111)

* Make private toots get PuSHed to subscription URLs that belong to domains where you have approved followers

* Authorized followers controller, stub for bulk action

* Soft block in the background

* Add simple test for new controller

* Rename Settings::FollowersController to Settings::FollowerDomainsController, paginate results,
rename "private" post setting to "followers-only", fix pagination style, improve post privacy
preferences style, improve warning style

* Extract compose form warnings into own container, show warning when posting to followers-only with unlocked account

spec/controllers/settings/follower_domains_controller_spec.rb

@@ -0,0 +1,34 @@
+require 'rails_helper'
+
+describe Settings::FollowerDomainsController do
+  let(:user) { Fabricate(:user) }
+
+  before do
+    sign_in user, scope: :user
+  end
+
+  describe 'GET #show' do
+    it 'returns http success' do
+      get :show
+      expect(response).to have_http_status(:success)
+    end
+  end
+
+  describe 'PATCH #update' do
+    let(:poopfeast) { Fabricate(:account, username: 'poopfeast', domain: 'example.com', salmon_url: 'http://example.com/salmon') }
+
+    before do
+      stub_request(:post, 'http://example.com/salmon').to_return(status: 200)
+      poopfeast.follow!(user.account)
+      patch :update, params: { select: ['example.com'] }
+    end
+
+    it 'redirects back to followers page' do
+      expect(response).to redirect_to(settings_follower_domains_path)
+    end
+
+    it 'soft-blocks followers from selected domains' do
+      expect(poopfeast.following?(user.account)).to be false
+    end
+  end
+end

spec/controllers/settings/preferences_controller_spec.rb

@@ -2,6 +2,7 @@ require 'rails_helper'
 
 describe Settings::PreferencesController do
   let(:user) { Fabricate(:user) }
+
   before do
     sign_in user, scope: :user
   end
@@ -9,13 +10,12 @@ describe Settings::PreferencesController do
   describe 'GET #show' do
     it 'returns http success' do
       get :show
-
       expect(response).to have_http_status(:success)
     end
   end
 
   describe 'PUT #update' do
-    it 'udpates the user record' do
+    it 'updates the user record' do
       put :update, params: { user: { locale: 'en' } }
 
       expect(response).to redirect_to(settings_preferences_path)
@@ -31,7 +31,7 @@ describe Settings::PreferencesController do
         user: {
           setting_boost_modal: '1',
           notification_emails: { follow: '1' },
-          interactions: { must_be_follower: '0' }
+          interactions: { must_be_follower: '0' },
         }
       }