Fixed bug when displaying on sample site page

If the chemical results have not been uploaded, the bubble chart will
not appear.
Instead of crashing
Added more interactivity to phylogenetic tree

Nodes highlight there children
Images now come from external source

Also displays BESTPHOTO on the "browse by image" and "simple results"
page
Private sample sites will no longer be displayed

A Placeholder is displayed where the map should be on that locations
page
It's position is not pinned to the map on the results page
More interactivity to phylogenetic tree

Child nodes now show the path to there parents and grandparents etc
Merge branch 'master' of https://github.com/1000Springs/web-app
Fixed issue causing logo to be enormous in Safari
Trying a larger background
Sample site now checks if sample has chem data