Altered config/express.js to deal with changes in new version of express
Added panel for displaying dis usage on configuration page
Added reference to module diskspace
Changes required to display disk usage stats on configuration page

modified:   controllers/application.js views/configure.ejs
Merge pull request #5 from kmichal/show_diskspace_usage

Show disk space usage on configuration page
Merge pull request #6 from kmichal/beta

Merge beta into master