Issues following !1463

• Fetching transactions should update the real balance too if there are new transactions (#1155 (closed))
• Not really a bug per se: I have disabled accesses (I moved from the bank) for which I created a last transaction to set the balance (computed) to 0. Now it only returns the sum of the transactions (without the offset). Maybe for disabled accesses we should have a migration that sets the balance to the computed balance (with offset) ?
• Accounts resync does not update the real balance (was: I have one account (without transactions, it's a loan) for which the balance is never updated (stays at null)). See !1465 (closed)