added the tagsbar implementation from
https://github.com/goxr3plus/JavaFX-TagsBar

catching up with source branch

commented as it seems to generate a parsing exception

catch up with branch to get metadata serialization deserialization code

Catch up with master to have the serialization and deserialization for latlong metadata

This method adds also a location object which includes metadata

this is to properly connect variations of the same committer details to
the right identity

arg[0].