Update NGINX Accel-Redirect Code

This will send /WEBROOT/data/FILEPATH to NGINX, FILEPATH can be..

1. files/RELATIVE-PATH = "Common Files"
2. personal/USER/RELATIVE-PATH = "My Files"
3. WORKSPACE/RELATIVE-PATH = "Additional FS Workspaces"


NGINX Config Changes 
----

```
location ^~ /data {
    internal;
#    location /data/WORKSPACE {
#        alias /PATH/TO/WORKSPACE;
#    }
}
```
**fastcgi_param X-Accel-Mapping** in no longer needed.