Adds ability to load locally or from the internet.
Adds saving dialog.
Adds share facility.
Adds share and load images.
Allows loading from the command line
Fixes small spacing issue.
Fixes labels on save and share windows.
Ensures that the directory exists when trying to write a file.
Allows spaces in filenames.
Consistently positions the dialog windows.
Merge pull request #26 from KanoComputing/io_features

Adds sharing and loading