Photo Resize

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Attempt to fix crashes on large images

Updated icon so it can be seen on white background

Added "very small" image size option (600x600, should be around 150kb)

Further efforts to reduce chance of running out of memory when generating image sizes

Reduced chance of running out of memory when generating Large image size.

Fixed crash on Android versions prior to 4.0.

Made size selection dialog disappear after size is selected.