Monthly summary of payments sent and received

[saubyk]

Similar to the monthly summary for routing fee earned, we can create a monthly summary of payments made and received.
#52

Design should follow the similar pattern:

1. For each month display the aggregate amount.
2. Display a bar chart for the daily payments made, for the selected month.
3. Show the payments records in two separate grids for the amts sent and received.
4. Default view should pull up the current month with an ability to select past months