Replaced colours with a dark/light blue one.

Previous ones were not suitable (red/green), as they may have different
implications.
Refreshing sheet selectors on changing tick.
Merge branch 'master' of github.com:ucam-cl-dtg/urop-2014-ticking-ui
Overview highlight now highlights signed in user
Merge branch 'master' of github.com:ucam-cl-dtg/urop-2014-ticking-ui
Working on date picker element.picker in polymer.
Changed tick sorting dictionary to include Failed
minor change to strings
Merge branch 'new-ov-highlight'
Using intervals for dynamic reloading of slots.
Whoops! Used wrong variable....
tweaking csv comments
Merge branch 'master' of https://github.com/ucam-cl-dtg/urop-2014-ticking-ui
changing some packages
Reload should happen on next slot boundary.
Reload function had wrong "this".
Removed depreciation warning.
Added custon date picker elemetom date picker element. Wired up to add-edit-session card.
pre merge
Merge branch 'master' of github.com:ucam-cl-dtg/urop-2014-ticking-ui