Fixes #55 server-side file handling
- Found a method to detect whether app is running locally or on server (isServer on line 374 - can set to "TRUE" manually when developing to test server-side functionality locally)
- Removed folder upload option on server
- Server-side data uploads now work for tab-delim, NWIS, and PSF options
- Removed the directory selection server-side, user can only specify outfile name