Mississippi changes

1. New title: Nutrient Loads in the Mississippi-Atchafalaya River Basin
2. Change "tool help" to  "Help ?”
3. Change tagline to: The width of each river shows its relative contribution to nutrient loading. Show percent contributions. ( Show percentage contributions )
4. The ‘-select chemical type—’ dropdown should be change to 'select nutrient type-’
5. Add Download Data button to bottom of maps and put a box around it.
6. remove pie charts button
7. move "click on" to right