Added visual clustering (by company) to the homepage treemap
Made the new treemap work on pages other than the home page, fixed an array out of bounds error with the tag pages that don't have claims associated with them, fixed an array out of bounds error with the JSON functions in the data model, and also fixed a php error that occurs on company pages that aren't valid. </Wall of text>
Merge remote-tracking branch 'origin/treemapWork_clusters'