Enhancement to image info & sorting

[pelaxa]

This updated includes a few new features:

• The image info bubble is now bigger and at the absolute corner of the screen. This was done so data can be read from a distance.
• The image info bubble/div can now be placed in any of the 4 corners
• The image info bubble/div now includes a list of properties to be included. So far name and date (from EXIF information) are supported.
• The images can now be sorted by name, created or modified date (file date)
• the image sorting can now be done in ascending or descending order.
• BREAKING CHANGE: The property name to show the image info bubble has been corrected: was showmageInfo, and is now showImageInfo