Style reports perspective

For visuals, see "Latest Visuals/Reports_Dashboard.png" and "Latest Visuals/Reports_Detail.png"

As part of this story:

• Style the top grey bar
• Update the icons
• Update the grey backdrops in the reports to be solid grey

No other changes are needed, so don't update fonts, etc. as that will likely cause a lot of layouting issues as the texts will grow.