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 
Where in that Stackoverflow answer does it say anything about dashes not being OK? It explicitly says they are.

The ID vs classes thing is a different matter. I tend to agree, but we definitely should use IDs for stuff which is only allowed to be once on the page like the header, app-navigation, app-content and so on. Using IDs for that gives a good sense of hierarchy.