Nav bar now lists showreels and graphs as well as dashboards
Graphs can be displayed individually
Dashboard model now contains information on graph dimensions to display, graph models are now dimensionless
Graphs can be 'displayed' full screen
Theme helper now takes in a levels argument in order to determine the correct relative file path
Demo data now has fewer dashboards, graphs of similar types are shown next to each other
added unit tests for new schemas
added theme helpers test
added theme/style set helper tests