* fixed visibility warnings
* solved visibility and line length warning
* change a test assertion that fails due to chai dependence update
* linter, constructor style and solved visibility warnings
* Changed Windows line endings to Unix.
* added the RBACMintableToken
* added MintedCrowdsale with RBACMintableToken test
* added a mintable behaviour for tests
* moved minting tests in behaviour
* created a minted crowdsale behaviour to be tested with both mintable and rbacmintable token