1.4.0: Remove GAS in module execution flows

[mmv08]

This PR:

• Implements Remove usage of gasleft in execute flows #459 by adding a new method in the executor to use maximum avaialbe gas

[coveralls]

Pull Request Test Coverage Report for Build 3882557761

• 1 of 1 (100.0%) changed or added relevant line in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 96.943%

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Totals
Change from base Build 3882044127:	0.0%
Covered Lines:	298
Relevant Lines:	306

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💛 - Coveralls

[coveralls]

Pull Request Test Coverage Report for Build 3776769989

• 3 of 4 (75.0%) changed or added relevant lines in 2 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage decreased (-0.4%) to 98.056%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
contracts/base/Executor.sol	2	3	66.67%

Totals
Change from base Build 3775549655:	-0.4%
Covered Lines:	307
Relevant Lines:	309

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💛 - Coveralls

[rmeissner]

I would not touch the Executor contract. We can call the execute method with type(uint256).max and get the same result without adding a new method and a constant.

[mmv08]

I would not touch the Executor contract. We can call the execute method with type(uint256).max and get the same result without adding a new method and a constant.

omg 🤦 🤦 for some reason the type max didn't compile the first time for me and I thought that it wasn't available in solidity 0.7.x. Thanks