Fix all Layout/SpaceAfterComma issues and remove from rubocop_todo list

.rubocop_todo.yml

@@ -557,21 +557,6 @@ Style/RescueModifier:
     - 'app/controllers/concerns/commentable_actions.rb'
     - 'app/controllers/verification/sms_controller.rb'
 
-# Offense count: 14
-# Cop supports --auto-correct.
-Layout/SpaceAfterComma:
-  Exclude:
-    - 'app/models/ahoy/data_source.rb'
-    - 'app/models/banner.rb'
-    - 'app/models/concerns/search_cache.rb'
-    - 'app/models/concerns/taggable.rb'
-    - 'app/models/spending_proposal.rb'
-    - 'app/models/user.rb'
-    - 'spec/features/valuation/spending_proposals_spec.rb'
-    - 'spec/lib/census_api_spec.rb'
-    - 'spec/models/abilities/moderator_spec.rb'
-    - 'spec/models/verification/management/email_spec.rb'
-
 # Offense count: 20
 # Cop supports --auto-correct.
 # Configuration parameters: EnforcedStyle, SupportedStyles.