Allowance Module Does not Support Non-Reverting ERC-20 Transfers

[nlordell]

Description

The allowance module will not revert when transfer-ing a token that returns false instead of reverting on failed a transfer. This means that for some tokens, the module won't correctly revert with Could not execute token transfer on failed transfers.

Expected Behaviour

Transferring a token where transfer returns false but does not revert should cause the allowance module to revert as well. Additionally, calling transfer on an address without code should potentially revert as well.