Merge pull request #92 from Generic-Voting-Application/master

Bring hotfix back to develop
Back-end supports poll expiry
Small fix to voting accordion.
Poll expiry creation completed on front-end
Add "Login with Facebook"
Front-end changes to show time remaining
Merge pull request #93 from tpkelly/feature/facebook-login

Add "Login with Facebook"
Auto-refresh results page

Hooks in an interval to update the results if any new ones are available
Adds option to require authorisation
Various fixes
Merge pull request #95 from tpkelly/develop

Auto-refresh results page
Merge branch 'develop' of https://github.com/Generic-Voting-Application/voting-application into develop
Add tooltip info for vote type

Adds a short description of each type of voting strategy, displayed in
a tooltip when hovering over the "[?]" tag
Eliminate multiple options in STV

To reduce the graphing steps, we remove all options which are tied for
last place in a single step
Tie results for ranks when eliminated simultaneously
Chart the results

Aggregates the results of each round of voting, and charts them using
InsightJS.

The darker the column, the more "sure" of the result.
Tooltips indicate who voted for what, and what rank preference it was.
Fix wrong ordering of columns

Due to a bug in insight, marker series do not preserve data order, so we
were seeing the columns in the wrong places.
Fix reloading of chart

We only want to reload if something new has happened
Merge pull request #96 from tpkelly/feature/voting-info-tooltip

Add tooltip info for vote type
Merge branch 'develop' of https://github.com/Generic-Voting-Application/voting-application into develop