CSS rework, aligned view on all pages
removed google JS from pages which do not require it

added google_visualr and converted dashboard and hosts graphs

fixes #192 - Host Run Interval Chart Broken

fixes #124 - Support run interval other than default 30 minutes

shorter time output in dashboard view

fixes #130 - divide by zero in dasbboard

fixes #80, fixes #106 and fixes #128

fixes - #120 - Include timestamp of dashboard page generation

fixes #89 - this adds basic graphs and charts for your inventory, it
also includes minor changes to the dashboard graphs

first stab at #77 - add basic graphing engine and added a couple of graphs in the dashboard