Upload progress reporting is insufficient. about dive

[BryonLewis]

Updates that are completed:

• Switch to utilizing the girder_web_component/mixin utils for the upload (thanks for the info Brandon)
• Updated the progress dialog to count down the completed number of image files. (there is a delay as the first ones start uploading)
• Fixed it so sequential pending uploads operate properly
• Edited the display so that Videos will display the video size and then count down the remaining filesize for the upload.
• Updated the upload process so that it will handle adding additional uploads while in the process of uploading items.
• Changed the button from ‘Upload’ to ‘Start Upload’ on numerous instances I believe that clicking on ‘Upload’ would allow me to add more files.

Stuff left to do

• Implement some proper error handling, using Girder Web Components as a base
• Handle weird case of uploading multiple video and csv files.
• If there are multiple video files we should indicate total number and size of all of them
• If there is a single video file we use that as the size basis for the calculation and progress
• General self review of code changes to make sure all items make sense and are clear and efficient.