Temp files/File whitelists

[pan261]

Something like vim will make swap (.swp) files when a new file is being written but isn't being saved. Chokidar will pick up on these files (even though they are hidden to the user) and try to upload, and it will fail. This field:

ignored: (path) => path.split('.').pop() === "swp",

was added to the chokidar config options to ignore these files, but there may be other temporary file types we need to handle in the future.

[pan261]

I've found that simple regexes won't work for the ignored field, but they should be able to work when wrapped in a function. Another thing to note is that there are some file extensions that will not be accepted by the fusion api, for example, I tried to upload a half-downloaded ISO, the extension was .iso~, and the result was this: