Indigo 2.4 - User interface work

Yves and Ben have been working away on the user interface improvements in Indigo 2.4. Nothing ground breaking yet, just fixing lots of quirky little bugs and making Indigo nicer to use in your daily workflow. Some ideas for a very slightly redesigned renderer settings dialog:

See this thread don't make me think to join the discussion about the small fixes we can make to Indigo to make it nicer for you to use in Indigo 2.4.