The Issue
I'm trying to build a very simple GUI application that either (i) runs on a local Ubuntu 14 server, or (ii) that runs locally but can read/write data from this server. Multiple people will be using this implementation to make modifications to a very simple array data file. The final solution can either be a script, dynamic webpage, or precompiled program.
Attempted Solutions
Writing an HTML file that uses PHP to read/write form data: PHP is not enabled on this server. HTML5 FileSystem API doesn't seem to do what I need it to (i.e. it seems to only sandbox IO).
Python: Tkl/Tcl/wxWidgets are not available on this server, and most of the people who will be using this won't have it available locally either.