[x] Use a dedicated route for Add transaction view
[x] When the user clicks on cancel, show a confirmation modal
[ ] Show pocketbook balance in the add transaction form (may be invalid if it is shown as a child route since pocketbook-detail component already shows the balance)
[x] This feature is required to avoid multiple overlays
Updates on Add Transaction View
Show pocketbook balance in the add transaction form (may be invalid if it is shown as a child route since pocketbook-detail component already shows the balance)