MainWindow layouting

[Thomas Lübking]

Am Wednesday 24 March 2010 schrieb Mark Kretschmann:
> In fact it's a hack that took us a long time to get right. Qt's dock
> widget system isn't exactly great, in many respects.
I'm pretty sure it causes bug #231428, i'm gonna try sth. different =)

> Making the layout crash persistent by storing it immediately is sort
> of an incidental (but positive) side effect of this hack.
The "on disk" storage should not be required then anymore and doesn't make 
things exactly "faster" - we can oc still keep a "write only" (maybe with 
longer timeout)