Capture additional exif metadata from photos if available

[Jaymassena]

We should capture and store date taken and any location or place information

[Jaymassena]

We now capture location and created date for images selected from the photo library if the metadata is available. We are not setting either for photos taken using Patchr for now because that would require extra steps and possibly location authorization.

Future uses for the metadata

• Offer the option to slot a message in the timeline based on the date the photo was taken.
• Show a map with markers for messages/photos that have an associated location.