Pipelines with input detections

[BryonLewis]

Adding in the capability to input detections/tracks into pipelines with the uility_ name.

• generate_ pipelines are renamed to utility_ and require user input
• Updated the generate category to utility ("utilities") to reflect the new structure
• add segmentation watershed and track user selections are the two pipelines that expect user input and will properly generate detections from that. add segementation watershed will take existing detections and generate polygons for them. track user selections will take a single detection and create a track for it.
• Added in some templating for passing tracks/detections into pipelines
• Right now ALL utility pipelines will pass the detections in, the pipelines that don't accept it will ignore it.
• Passing in an empty file will cause the pipeline to fail like it should
• There are checks to prevent passing in an empty pipeline on web version

[subdavis]

Looks great. I like the error for no detections.