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)
fixed new exercises not being displayed in view after adding them, fixed some redundent code
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
made it so you can add items when you click on a certain date, like Neil suggested.
Merge pull request #260 from andeic/leaderboards

Added Leaderboards
made all pages except neils have the same button styles. Also added some missing headers and changed the size of the existing headers. I didn't change Neil's buttons because I might change some stuff after.
Merge pull request #263 from maronin/UICentreChanges

made all pages except neils have the same button styles. Also added some...
Merge pull request #259 from maronin/issue#258

fixed new exercises not being displayed in view after adding them, fixed...
fixed bug where it would change you to rank 1 if you were not on the current page of the leaderboard
fixed some bugs with the remove form and dates acting weird
Merge pull request #264 from maronin/issue#233

Forgot to add this
Merge branch 'master' of github.com:Lynart/Project-LimitBreaker into issue262
added number of achieved goals and logged exercises to the profile page
finished making the top 3 medals appear in the profile