Add and apply rubocop rules for empty lines

We were very inconsistent regarding these rules.

Personally I prefer no empty lines around blocks, clases, etc... as
recommended by the Ruby style guide [1], and they're the default values
in rubocop, so those are the settings I'm applying.

The exception is the `private` access modifier, since we were leaving
empty lines around it most of the time. That's the default rubocop rule
as well. Personally I don't have a strong preference about this one.


[1] https://rubystyle.guide/#empty-lines-around-bodies

spec/features/verification/email_spec.rb

@@ -1,7 +1,6 @@
 require "rails_helper"
 
 describe "Verify email" do
-
   scenario "Verify" do
     user = create(:user,
                   residence_verified_at: Time.current,

spec/features/verification/letter_spec.rb

@@ -1,7 +1,6 @@
 require "rails_helper"
 
 describe "Verify Letter" do
-
   scenario "Request a letter" do
     user = create(:user, residence_verified_at: Time.current,
                          confirmed_phone:       "611111111")
@@ -41,7 +40,6 @@ describe "Verify Letter" do
   end
 
   context "Code verification" do
-
     scenario "Valid verification user logged in" do
       user = create(:user, residence_verified_at: Time.current,
                            confirmed_phone:       "611111111",
@@ -129,6 +127,5 @@ describe "Verify Letter" do
       expect(page).to have_content "You have reached the maximum number of attempts. Please try again later."
       expect(page).to have_current_path(account_path)
     end
-
   end
 end

spec/features/verification/level_two_verification_spec.rb

@@ -1,7 +1,6 @@
 require "rails_helper"
 
 describe "Level two verification" do
-
   scenario "Verification with residency and sms" do
     create(:geozone)
     user = create(:user)
@@ -38,5 +37,4 @@ describe "Level two verification" do
       verify_residence
     end
   end
-
 end

spec/features/verification/residence_spec.rb

@@ -1,7 +1,6 @@
 require "rails_helper"
 
 describe "Residence" do
-
   before { create(:geozone) }
 
   scenario "Verify resident" do

spec/features/verification/sms_spec.rb

@@ -1,7 +1,6 @@
 require "rails_helper"
 
 describe "SMS Verification" do
-
   scenario "Verify" do
     user = create(:user, residence_verified_at: Time.current)
     login_as(user)
@@ -76,5 +75,4 @@ describe "SMS Verification" do
     expect(page).to have_content "You have reached the maximum number of attempts. Please try again later."
     expect(page).to have_current_path(account_path)
   end
-
 end

spec/features/verification/verification_path_spec.rb

@@ -1,7 +1,6 @@
 require "rails_helper"
 
 describe "Verification path" do
-
   scenario "User is an organization" do
     user = create(:user, verified_at: Time.current)
     create(:organization, user: user)
@@ -98,5 +97,4 @@ describe "Verification path" do
       expect(page).to have_content "Your account is already verified"
     end
   end
-
 end

spec/features/verification/verified_user_spec.rb

@@ -1,7 +1,6 @@
 require "rails_helper"
 
 describe "Verified users" do
-
   scenario "Verified emails" do
     user = create(:user,
                   residence_verified_at: Time.current,
@@ -133,5 +132,4 @@ describe "Verified users" do
 
     expect(page).to have_current_path(new_sms_path)
   end
-
 end