Add more granular OAuth scopes (#7929)

* Add more granular OAuth scopes

* Add human-readable descriptions of the new scopes

* Ensure new scopes look good on the app UI

* Add tests

* Group scopes in screen and color-code dangerous ones

* Fix wrong extra scope

spec/controllers/api/v1/blocks_controller_spec.rb

@@ -3,8 +3,9 @@ require 'rails_helper'
 RSpec.describe Api::V1::BlocksController, type: :controller do
   render_views
 
-  let(:user)  { Fabricate(:user, account: Fabricate(:account, username: 'alice')) }
-  let(:token) { Fabricate(:accessible_access_token, resource_owner_id: user.id, scopes: 'follow') }
+  let(:user)   { Fabricate(:user, account: Fabricate(:account, username: 'alice')) }
+  let(:scopes) { 'read:blocks' }
+  let(:token)  { Fabricate(:accessible_access_token, resource_owner_id: user.id, scopes: scopes) }
 
   before { allow(controller).to receive(:doorkeeper_token) { token } }
 
@@ -49,5 +50,14 @@ RSpec.describe Api::V1::BlocksController, type: :controller do
       get :index
       expect(response).to have_http_status(200)
     end
+
+    context 'with wrong scopes' do
+      let(:scopes) { 'write:blocks' }
+
+      it 'returns http forbidden' do
+        get :index
+        expect(response).to have_http_status(403)
+      end
+    end
   end
 end