ticker can select slots as unavailable
merged
Merge branch 'master' of github.com:ucam-cl-dtg/urop-2014-ticking-ui
Merge branch 'master' of github.com:ucam-cl-dtg/urop-2014-ticking-ui

Conflicts:
	ETick/WebContent/elements/tickerSignupsView/TickerSignupsViewport.html