Re-rename "ejabberd" service to "xmpp"

Shouldn't matter which implementation is integrated if someone adds
another one

app/models/user.rb

@@ -57,7 +57,7 @@ class User < ApplicationRecord
   end
 
   def devise_after_confirmation
-    enable_service %w[ discourse ejabberd gitea mediawiki ]
+    enable_service %w[ discourse gitea mediawiki xmpp ]
 
     #TODO enable in development when we have easy setup of ejabberd etc.
     return if Rails.env.development?
@@ -137,12 +137,12 @@ class User < ApplicationRecord
 
   def pref_enabled?(key)
     value = preferences.dig(*key.split(":"))
-    [true, "true", 1, "enabled"].include?(value)
+    [true, "true", "enabled", 1].include?(value)
   end
 
   def exchange_xmpp_contact_with_inviter
-    return unless inviter.services_enabled.include?("ejabberd") &&
+    return unless inviter.services_enabled.include?("xmpp") &&
-                  services_enabled.include?("ejabberd")
+                  services_enabled.include?("xmpp")
     XmppExchangeContactsJob.perform_later(inviter, self.cn, self.ou)
   end
 

app/views/admin/users/show.html.erb

@@ -135,7 +135,7 @@
           <td>XMPP (ejabberd)</td>
           <td>
             <%= render FormElements::ToggleComponent.new(
-              enabled: @services_enabled.include?("ejabberd"),
+              enabled: @services_enabled.include?("xmpp"),
               input_enabled: false
             ) %>
           </td>

spec/models/user_spec.rb

@@ -109,7 +109,7 @@ RSpec.describe User, type: :model do
 
     before do
       Invitation.create! user: user, invited_user_id: guest.id, used_at: DateTime.now
-      allow_any_instance_of(User).to receive(:services_enabled).and_return(%w[ ejabberd ])
+      allow_any_instance_of(User).to receive(:services_enabled).and_return(%w[ xmpp ])
     end
 
     it "enqueues a job to exchange XMPP contacts between inviter and invitee" do
@@ -131,11 +131,11 @@ RSpec.describe User, type: :model do
     let(:user) { create :user, cn: "willherschel", ou: "kosmos.org" }
 
     it "enables default services" do
-      expect(user).to receive(:enable_service).with(%w[ discourse ejabberd gitea mediawiki ])
+      expect(user).to receive(:enable_service).with(%w[ discourse gitea mediawiki xmpp ])
       user.send(:devise_after_confirmation)
     end
 
-    context "for invited user with ejabberd enabled" do
+    context "for invited user with xmpp enabled" do
       let(:guest) { create :user, id: 2, cn: "isaacnewton", ou: "kosmos.org", email: "newt@example.com" }
 
       before do