Add 'At a glance' and 'Sales Analysis' tiles to company group level

Currently, we only show the At a glance and sales analysis pages on the company level. Allowing this to be visible on the company group level would be beneficial as it would allow for a quick overview on how a group is performing instead of having to look into each company individually. This could also be useful to monitor how much of the top products are being sold across the company group vs the children companies. For example, if you can see that product1 is popular on the company group, but you notice that the product has not been pitched to one of the children companies, then you can approach them for sales of product1 as you can easily see it performs well in that group.