Show date of uploaded pictures

[holdit]

It would be nice if EVMap displayed the date of upload when viewing pictures of a charger.

Some of the pictures are old and the site changed since they were taken. Some are new, but are from bad cameras, so they look like they're old.

I don't know what the back ends allow you to show, but at least the date would be nice. A commercial app I use shows a line of text at the bottom of the picture: "By username. X months ago."

Some apps don't display this on the pictures, but they have comments and the date is displayed there. Not an option in this case, I think, since #277 is still not implemented?

[johan12345]

GoingElectric unfortunately do not provide this information through their API, the date is only visible when editing the charger through their website.

For OpenChargeMap we can add it.