`Transaction.equals` does not check all fields

[jasonpaulos]

Problem

The Transaction.equals method checks for equality between two Transaction objects. Currently, many fields from the two transactions are checked, but there is a large number of fields (mostly app call transaction ones) which are NOT currently being checked.

Scope

The Transaction.equals method should check equality by checking all possible transaction fields.

Consider also an automated test which can somehow verify that each transaction field is checked by the equals method.