Fix wallet:transactions and add --balance option

Summary:

1. ->each() without ->get() does set "LIMIT 1000 OFFSET 0" on the query. We use cursor() instead.
2. Added option to print wallet balance after every transaction

Test Plan: ./phpunit tests/Feature/Console/Wallet/TransactionTest.php

Reviewers: #hkccp_developers, mollekopf

Reviewed By: #hkccp_developers, mollekopf

Subscribers: #hkccp_developers

Differential Revision: https://git.kolab.org/D4163