link and link ups
Merge pull request #223 from mwernimont/help_page

link and link ups
Now properly dealing with negative numbers 

If negative percentages are found, they are not included in with the pie
chart
Merge pull request #226 from isuftin/NAWQAAN-312

Now properly dealing with negative numbers
Merge branch 'master' of github.com:USGS-CIDA/nar_ui into NAWQAAN-304
Removed commented out code.