Changing time doesn't preserve the current setting

[SirLich]

The time setting is changed to trigger a rebuild of the time constants, but it's always set to 'play' when it's finished. A fast-forward or pause state won't be maintained.

We can "easily" fix this by changing the order of the operations, depending on the current selected state.

Paused -> Play -> Pause

Fast -> Play -> Fast

Play -> Fast -> Play