mindmaps should have the information about which MDI version and template version used

[EdoFro]

Note 2 self:

• MDI should write in map properties its version
• MDI should validate that styles and their conditional styles in map are compatible con current MDI version
• When importing MDI styles into a map it should write in its properties the template version
• use the new conditional styles API to order the MDI conditional styles rules before the “stop” rules

[EdoFro]

Done:

• MDI should write in map properties its version
• MDI should validate that styles and their conditional styles in map are compatible con current MDI version
• When importing MDI styles into a map it should write in its properties the template version

Pending:

• use the new conditional styles API to order the MDI conditional styles rules before the “stop” rules