Improve UI to display fluidly on different screen sizes.

Fixes the issue where top menu items would disappear on smaller screens.
Add Bootstrap v3.2.0 with Normalize v3.0.1 from github.com/twbs/bootstrap.
Add a modified jquery pnotify stylesheet.
Various UI tweaks.
Update CHANGES.md and TODO.txt
Merge pull request #34 from SickragePVR/feature/FluidUI

Improve UI to display fluidly on different screen sizes.