* Adding solhint, working on style fixes.
* Upgraded to solhint 1.5.0.
* Removed all references to Solium
* Updated mocks to make the pass the new linter rules.
* Reformatted the .solhint.json file a bit.
* Removed Solium configuration files.
* Remove Solium dependency.
* Add comment explaing disabled time rule in TokenVesting.
* Revert to the old (ugly?) style.
* Revert SignatureBouncerMock style.
* Fix ERC165InterfacesSupported interface.
