Make sure to not warn about PLAIN, SASL2 on prosody isn't released yet

Fixes #1199

Monal/Classes/MLXMPPManager.m

@@ -737,7 +737,9 @@ -(NSNumber*) login:(NSString*) jid password:(NSString*) password
     //when logging in using another device afterwards
     //TODO: to be removed once yax.im and quicksy.im supports SASL2 and SSDP!!
     //TODO: use preload list and allow PLAIN for all others once enough domains are on this list
-    [dic setObject:([domain isEqualToString:@"yax.im"] || [domain isEqualToString:@"quicksy.im"] ? @YES : @NO) forKey:kPlainActivated];
+    //allow plain for all servers not on preload list, since prosody with SASL2 wasn't even released yet
+    NSNumber* defaultPlainActivated = @YES;
+    [dic setObject:([domain isEqualToString:@"yax.im"] || [domain isEqualToString:@"quicksy.im"] ? @YES : defaultPlainActivated) forKey:kPlainActivated];
 
     NSNumber* accountNo = [[DataLayer sharedInstance] addAccountWithDictionary:dic];
     if(accountNo == nil)