Enables RSpec/EmptyLineAfterSubject & fixes all issues

Read more about cop at http://www.rubydoc.info/gems/rubocop-rspec/RuboCop/Cop/RSpec/EmptyLineAfterSubject

.rubocop.yml

@@ -66,3 +66,6 @@ RSpec/DescribedClass:
 
 RSpec/EmptyExampleGroup:
   Enabled: true
+
+RSpec/EmptyLineAfterSubject:
+  Enabled: true

spec/models/abilities/administrator_spec.rb

@@ -3,6 +3,7 @@ require 'cancan/matchers'
 
 describe Abilities::Administrator do
   subject(:ability) { Ability.new(user) }
+
   let(:user) { administrator.user }
   let(:administrator) { create(:administrator) }
 

spec/models/abilities/common_spec.rb

@@ -3,6 +3,7 @@ require 'cancan/matchers'
 
 describe Abilities::Common do
   subject(:ability) { Ability.new(user) }
+
   let(:geozone)     { create(:geozone)  }
 
   let(:user) { create(:user, geozone: geozone) }

spec/models/abilities/moderator_spec.rb

@@ -3,6 +3,7 @@ require 'cancan/matchers'
 
 describe Abilities::Moderator do
   subject(:ability) { Ability.new(user) }
+
   let(:user) { moderator.user }
   let(:moderator) { create(:moderator) }
 

spec/models/abilities/organization_spec.rb

@@ -3,6 +3,7 @@ require 'cancan/matchers'
 
 describe 'Abilities::Organization' do
   subject(:ability) { Ability.new(user) }
+
   let(:user) { organization.user }
   let(:organization) { create(:organization) }
   let(:debate) { create(:debate) }

spec/models/abilities/valuator_spec.rb

@@ -3,6 +3,7 @@ require 'cancan/matchers'
 
 describe Abilities::Valuator do
   subject(:ability) { Ability.new(user) }
+
   let(:user) { valuator.user }
   let(:valuator) { create(:valuator) }
   let(:non_assigned_investment) { create(:budget_investment) }

spec/models/verification/management/email_spec.rb

@@ -4,6 +4,7 @@ describe Verification::Management::Email do
 
   describe "#user" do
     subject { described_class.new(document_type: "1", document_number: "1234", email: "inexisting@gmail.com") }
+
     it "returns nil/false when the user does not exist" do
       expect(subject.user).to be_nil
       expect(subject.user?).to_not be