[Couchdb Wiki] Update of "Breaking_changes" by JanLehnardt

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The "Breaking_changes" page has been changed by JanLehnardt:
http://wiki.apache.org/couchdb/Breaking_changes?action=diff&rev1=25&rev2=26

Comment:
update for 1.2.0

  
  This page documents backwards-incompatible changes made during the evolution of CouchDB. While not all such changes will necessarily affect all users, most of them probably will. This page should show you what changed and how you'll need to adapt your code.
  
+ == Changes Between 1.1.0 and 1.2.0 ==
+ 
+  * _users database:
+    * User documents can now only be read by the respective users as well as admins, but not other or anonymous users.
+    * Views can only be defined and queried by admins.
+ 
+  * _replicator database:
+    * Documents will now have a forced `owner` field that corresponds to their authenticated user name.
+    * Users that are not the owner of a replication document will not see confidential information like passwords or oath tokens. The rest of the information is visible though. Admins can see everything.
+    * Views can only be defined and queried by admins.
+ 
  == Changes Between 1.0.0 and 1.1.0 ==
  
- * Document id's are now validated during PUT. This means that some PUT requests will fail that previously succeeded.
+  * Document id's are now validated during PUT. This means that some PUT requests will fail that previously succeeded.
  
  == Changes Between 0.11.0 and 1.0.0 ==