Many Pages now show ELO

* Elo added to match request page
* Elo added to match page
* Elo added to user show page
* Elo added to dashboard
* Elo added to user index page
* Dashboard shows last 5 matches
* Match request shows player's elo at the time of creation
* Match shows player's elo at the time of creation
Merge pull request #20 from elijahkim/ek/elo

Many Pages now show ELO