vc audiotriggers properties - fix: old icon still displayed in info column when switching bar type
audiotriggersproperties - fix crashes when selection no function or no widget in selection popups
fix previous commit
Improve VCWidgetSelection, now impossible to select no widget to prevent crashes in future uses
function selection: double click on a folder/catefory does not validate the input
audio trigger properties function selection: disable multi selection
Bump version to 4.7.4 GIT
Merge pull request #320 from plugz/audiotriggersproperties-fix

VC Audio triggers properties - fix crashes
ClickAndGo: improved popup layout when a lot of presets need to be displayed
Channels Configuration: it is now possible to unset a Channel Modifier

Channels Modifier Editor: select a previously set modifier when opening the dialog
Virtual Console: Solo Frames now handle Cue Lists and Sliders/Knobs in playback mode too
Show Manager: added delete action to tracks context menu

SceneItems.* renamed to ShowItems.*
Removed some more unused icons
Show Manager: move cursor when the view is clicked even if the grid is not enabled