Number/counter predefined image hotspot icon

Forums: 

I've opened this PR for a predefined image hotpsot icon type that is a counter (eg, it numbers each spot on the image in the order they are placed on the content entry form.)

Content types: 
BV52's picture

Hi  jhedstrom,

Thank you for your contribution. Let's wait for the core team to review your PR and once approved it will be merged with the official version.

-BV