Adding per-label insights and how to acces to them

[Porrumentzio]

Having the option to view data about a concrete label would be helpful for knowing how much I received from a concrete job, or how much I spent in food.
For this, all transactions tagged with a label should be added and showed as in Insights.

For accessing this data, which would not be shown in any tab on main app view, user could:

1. Tap the label on a transaction on Dashboard history. Here, the area used for label should not get the user to transaction overview view
2. Tap the label in a transaction overview (accessed when tapping transaction on Dashbord history)

As said, this would be helpful. Thanks for this app :)