Basic 1-shot Processing Implemented

Skeleton for Processing added, All images in one shot including Clear
Cache

Workflow: ClearCache > SearchFor (images) > Prepare >
DetermineNextImage (name) > FindImage (wait for image) >
waitForDownload (wait for file to download fully, then send to droplet)
> waitForDroplet (wait for processed file to save).

Partial pause and reprocess support added.

Canceling the clear cache will send the program back to the "Start"
window.