Release 1.5 rc4

• update dlls
• standard variants selectable on colormap list
• colormap variants for areas
• selectable gallery image annotation.
• keyarea gallery with selectable location annotation
• template based (HTML) tree generator
• derived list for composed rasters
• zoom gallery now highlight the zoom areas
• tree walk slide show
• parent duration for request list
• goto support for files/URLs.
• parameter QR codes
• mandel list table column selection
• duration column for new area list
• reordering of merge list
• fix viewport adaptation during scaling
• fix readonly mode for image save context menu
• fix favorites derived list to show only area names
• fix .mandtool config charset
• fix refinement list calculation