§ 14. Consent of commissioner to incorporation. Whenever any such certificate shall be presented to the secretary of state, he shall not file such certificate unless there shall accompany the same a certificate of the commissioner that he consents to the filing of such certificate; nor shall any amendment to the certificate of incorporation be filed unless it is accompanied by a certificate of the commissioner consenting thereto. If a company has entered into a contract with a municipality for the construction of a municipally aided project, the commissioner shall not issue a certificate consenting to an amendment of the certificate of incorporation of such company, unless the supervising agency has given its written consent to such amendment.