Added Basic Functionality For Leaderboards

-Added a button that goes to the leaderboards page on the masterpage
-Added the manager class, as well as a leader board item class
-Added a gridview that uses the leader board item class to display
-Abe to sort the leaderboard a few different ways
Imporoved Exercise Form

- Split Modify and add forms into separate panels
- Removed some Horizontal rule on manage expereince page
- Improved UI for the exercise page
Merge pull request #256 from maronin/issue#254

Imporoved Exercise Form
Merge branch 'master' of github.com:Lynart/Project-LimitBreaker into leaderboards
Fixed up the leaderboard

-You can now set how many results to display per page
-The irrelevant columns for the selected organization are hidden
-Added the ability to see your position at all times (not fully
functional)
leaderboards are now fully functional
added marks suggestion in addition to the users gricview
fixed paging and attached the users rank to the bottom of the first gridview
Merge pull request #260 from andeic/leaderboards

Added Leaderboards