Merge branch '5.2' into 5.3

diff --cc wcfsetup/install/lang/de.xml
index fe589f6f650110af352a81e0bcd4056484c9656a,935ff443a6d0069e9c6bc44089cff9b86d7f6bef..e01b887defdfb3f2ce201a16b3e5888e45fe261f
--- 1/wcfsetup/install/lang/de.xml
--- 2/wcfsetup/install/lang/de.xml
+++ b/wcfsetup/install/lang/de.xml
@@@ -4784,11 -4715,11 +4784,11 @@@ Bevor {if LANGUAGE_USE_INFORMAL_VARIANT
  dass {if LANGUAGE_USE_INFORMAL_VARIANT}du{else}Sie{/if} einmalig durch Klicken des folgenden Links die Gültigkeit {if LANGUAGE_USE_INFORMAL_VARIANT}deiner{else}Ihrer{/if} 
  E-Mail-Adresse {if LANGUAGE_USE_INFORMAL_VARIANT}bestätigst{else}bestätigen{/if}:
  
 -    {link controller='RegisterActivation' isEmail=true}u={@$mailbox->getUser()->userID}&a={@$mailbox->getUser()->activationCode}{/link} {* this line ends with a space *}
 +    {link controller='RegisterActivation' isEmail=true}u={@$mailbox->getUser()->userID}&a={@$mailbox->getUser()->emailConfirmed}{/link} {* this line ends with a space *}
  
 -{if LANGUAGE_USE_INFORMAL_VARIANT}Dein{else}Ihr{/if} Aktivierungscode lautet: {@$mailbox->getUser()->activationCode} {* this line ends with a space *}
 +{if LANGUAGE_USE_INFORMAL_VARIANT}Dein{else}Ihr{/if} Aktivierungscode lautet: {@$mailbox->getUser()->emailConfirmed} {* this line ends with a space *}
  
- Wenn {if LANGUAGE_USE_INFORMAL_VARIANT}du{else}Sie{/if} Probleme mit der Aktivierung Ihres Benutzerkontos {if LANGUAGE_USE_INFORMAL_VARIANT}hast{else}haben{/if}, dann {if LANGUAGE_USE_INFORMAL_VARIANT}wende
+ Wenn {if LANGUAGE_USE_INFORMAL_VARIANT}du{else}Sie{/if} Probleme mit der Aktivierung {if LANGUAGE_USE_INFORMAL_VARIANT}deines{else}Ihres{/if} Benutzerkontos {if LANGUAGE_USE_INFORMAL_VARIANT}hast{else}haben{/if}, dann {if LANGUAGE_USE_INFORMAL_VARIANT}wende
  dich{else}wenden
  Sie sich{/if} bitte an den Administrator unter: {@MAIL_ADMIN_ADDRESS}. Wenn {if LANGUAGE_USE_INFORMAL_VARIANT}du
  dich{else}Sie