Add new mind map diagram layouts

While several new layout options have been added in recent years, there are several useful layouts which MindManager could adopt - and which are increasingly available from MM’s competitors.

These include my favourite, block or table maps, in which topics and subtopics are arranged as block subdivisions within a table frame. These are great for inclusion as table diagrams in publications. In addition there are what are variously named circle, ring or pie diagrams - each is slightly different, but essentially they are all based on orbital segments around a central topic.