Updated to display correctly in multiple browsers

Fixes #15
Created toggle footer

Created toggle footer and temp toggle button
Updated toggle footer and button

Placed the toggle footer button and added a dummy back to top button
More bug fixes and foundations

Foundations for a new way of saving settings and new session length
control. Bug fixes are fixes #10
Fixed a bug!

Fixes #14
Done a load of tidying and error handler work

Error handling work and tidying up... it was a messy night, just don't
ask.
More PHP feature work

More work towards #4 - only need a countdown clock now.. Should this be
to do with session length or inactivity time?
Directory security

fixes #17
Quick fixes and a more serious start on setup

Works towards #12
Updates made - starting this up again soon maybe
Merge pull request #18 from KanThorne/master

Write ALL the PHP!