update votes controller
add restrict_voting method
add restrict_voting -needs work
added validation to restrict users to one vote
removed restriction from user
now users can't downvote more than once
upvoting and downvoting now work perfectly
vote display
add vote type column to votes
add votecount to posts
Merge remote-tracking branch 'origin/development' into voter-user-stories2

Conflicts:
	app/models/user.rb
Merge pull request #6 from zahidkarim/voter-user-stories2

Voter user stories2