Site totals in admin dashboard are not correct

Updated the "Site Totals" area in the Admin Dashboard (ref https://github.com/stoopkid1/ezleague/issues/57)  & sanitized user input from other frontend functions
![t_hl6fsskthlqjqk-uuf](https://cloud.githubusercontent.com/assets/2205744/4143691/a6aafdf4-33cf-11e4-9cca-60a9fbc80033.png)