More dashboard bling

[lars-t-hansen]

Some additional items to fix when we get around to it

• [x] The machine-detail page still operates with RCPU and RMem instead of CPU% and Mem%
• [ ] The machine-detail page shows hostname in the tables but this is unnecessary
• [ ] There could be tooltips on the tables on the machine-detail page
• [ ] There could be tooltips on the tables on the cpuhog and deadweight pages
• [ ] The colors picked for the machine-detail pages and weekly summary pages and so on should be constant, and contrasting

[lars-t-hansen]

Not sure what's actionable here for dashboard-2 but we're not going to clean up the old dashboard, that's for sure.