Add unsubscribe link to email

app/views/conflicts_mailer/conflicts_email.html.erb

@@ -3,3 +3,8 @@
 <%= render partial: 'resolved_conflict_list', locals: {conflicts: @resolved_conflicts, heading: 'Conflicts that have been resolved:'} %>
 
 <%= render partial: 'conflict_list', locals: {conflicts: @existing_conflicts, heading: 'Existing conflicts on untouched branches:'} %>
+
+<p>
+You are receiving this email because you made a commit to the <%= @repo_name %> repo.<br>
+<%= link_to 'Click here to unsubscribe.', { controller: :users, action: :unsubscribe, id: @user.id }, { style: 'text-decoration: none;' } %>
+</p>

app/views/conflicts_mailer/conflicts_email.text.erb

@@ -3,3 +3,6 @@
 <%= render partial: 'conflict_list', locals: {conflicts: @resolved_conflicts, heading: 'Conflicts that have been resolved:'} %>
 
 <%= render partial: 'conflict_list', locals: {conflicts: @existing_conflicts, heading: 'Existing conflicts on untouched branches:'} %>
+
+You are receiving this email because you made a commit to the <%= @repo_name %> repo.
+To unsubscribe, click here: <%= url_for controller: :users, action: :unsubscribe, id: @user.id %>

config/routes.rb

@@ -1,3 +1,5 @@
+Rails.application.routes.default_url_options[:host] = GlobalSettings.web_server_url
+
 Rails.application.routes.draw do
   get 'users/:id/unsubscribe' => 'users#unsubscribe'
 

config/settings.test.yml

@@ -2,6 +2,7 @@ cache_directory: './tmp/cache/git'
 maximum_branches_to_check: 0
 email_override: '' #redirect all emails to this address
 email_filter: [] #only email users in this list. Empty to disable filter.
+web_server_url: 'http://localhost:3000'
 repos_to_check:
   MyRepo:
     repo_name: 'Organization/repo'