Resolves Issue #7: Removes decimal place from tweets when not needed
Resolves Issue #7: Removes decimal place from tweets when not needed

Added "{val:g}".format(val=x) to PollTweet.long_tweet and .short_tweet, so poll numbers will now show with a decimal place only if a non-zero decimal value is present. Poll percentages now also end with a '%' for formatting's sake.

haaspt/PollTrack