Remember control state:

- expanded manufacturers in add fixture dialog
- function type checkboxes in select function dialog

add test.sh for aboutbox_test
add unit tests for functionselection
Merge pull request #156 from janosvitok/settings

Remember state of FunctionSelection and AddFixture panels
SceneEditor: when checking a channel group fixtures will automatically be added and channels enabled/disabled
ArtNet plugin listens only on port and not port+address. This makes ODE working but can break some multi-input usage
Fixtures remap: It is now possible to remap fixture names as well
Fixed widget selection recursion
Consistency improvement: Channels group editing can now be done by double clicking or with the properties button. More intuitive.
Updated translations
Fixed fixtures from channels group

Started to update documentation
Fixed SceneEditor::setTabChannelState to work in any view mode
VC Cue list crossfade: Last missing case should be fixed now