FILEMAN-38: Upload multiple files at once (+folder hierarchy) by dropping a folder in order to to a massive import
* Put uploads in a pending queue to prevent the browser from blocking/crashing when dropping a huge folder (with many files inside).
FILEMAN-38: Upload multiple files at once (+folder hierarchy) by dropping a folder in order to to a massive import
* Attempt to read only root files that have less than 4096 bytes. Most folders that are dropped have 0 or 4096 so this should cover 90% of the cases while still being efficent (less files read).
* Fix the code that fails safe when a folder is dropped in a browser that doesn't support folder upload.