Make the password changed msg inline to fix #10242

@MorrisJobke this is your plugin … Prior to this I decided to work around this, by removing the tipsy, but this seemed pretty hacky to me, so I did this instead.

![screenshot560](https://cloud.githubusercontent.com/assets/1410802/4012260/31005652-2a0c-11e4-8bda-81da88bdd819.png)

Should I add a margin between the message and the `h2`?

cc @ser72 @LukasReschke @owncloud/designers 
while at it: please get rid of these all-lowercase ids - camelCase is the way to go - THX