[Feature Request/Refinement] Mobile kbfs uploads

Great job on mobile uploads. Uploading pictures is great.

Here's my list of things I would like to see regarding mobile uploads to kbfs:

1. Ability to upload movies (.mov / .mp4 etc.) from the phone gallery. (Currently only photos can be uploaded)
2. Ability to queue uploads in one go. (Like dropbox, when you tap upload, you can checkbox multiple pictures and movies and when you tap upload it will upload them in order, only 2 parallel downloads at a time.) (It doesn't need to be fast or parallel, I just need to be able to set it and forget it, and come back 5 minutes later and all my pics are uploaded rather than babysitting the phone and tapping upload -> picture tap -> wait for upload every 5-10 seconds.)
3. Ability to delete files from kbfs from mobile. (similar to uploads, having a checkbox system so I can delete multiple files in one go would help) (this is because some times my wife uploads the same files twice and we have to delete 5-10 pictures all at once from her phone)

Thanks a ton and I'm looking forward to moving my family photos from Dropbox.

No files, tests, or entry points are identified in the issue, so start by locating the mobile KBFS upload and file-management flows. Done would include selecting and uploading photos and movies in a queue, plus selecting and deleting multiple KBFS files from the phone, with the behavior verified in the mobile client.

Written by the indexing model from the issue text.