Merge branch 'issue-10-display-latlong-metadata-in-the-fx-ui' into issue-11-allow-user-to-enter-and-update-metadata-about-the-latlong-points

this should fix issue 10

entries
loading the new image for the delete icon (x)

added a white x png which fits better the ui

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