In all prosecutions or commission hearings held under this chapter, it shall not be necessary to show the knowledge of the principal to hold him responsible for the acts of any agent or servant. Every act or omission of any nature constituting a violation of any of the provisions of this chapter by an officer, director, manager, agent or employee of any licensee shall be deemed and held to be the act of the licensee, and said licensee shall be punishable in the same manner as if such acts or omissions had been done or omitted by him personally. In all cases, persons to whom intoxicating liquors shall be sold in violation of the provisions of this chapter shall be competent witnesses. (Ord. 06-87, 11-2-1987)