Display dashboard layout

This is a subtask of #170 an relates to the visual design of the Display app dashboard.

The brief:

Being a core app Display should look as though it belongs with other core apps (DataCloud, App market etc..)
Display is a dashboard which shows widgets (data views) arranged in a 3x3 grid with a widget chart (double widget height)
Additional widgets are arranged under tabs (in future releases these tabs will be associated with user defined roles but for now they are simply tabs)
The double height section is a mock up of a Widget chart - basically showing the widgets in order of popularity. Given taht this is not make or break to the functionality of the app you can take creative license here and if you have a better idea put it forward!
Tab names- these will eventually be linked to roles but for now they are just tabs and the generic 'Work' and 'Home' can also be changes if you have something better.

Note: the widget dimensions 308px X 296px cant be changed

prifina / app-desktop