title attribute display first option

[SandrineProusteau]

When we over the component, the infowindow using title attribute display only the first choice, even if no or several choices are made.
It should display all choices separated by ",", or no title at all.

[wasikuss]

simple PoC https://jsfiddle.net/wasikuss/0gzw7r3u/ - I'll release it tomorrow.