Matters covered by this article shall be the construction, erection and maintenance of projecting signs, temporary signs, roof signs, ground signs, wall signs, post signs, globe signs, barber poles, marquees, porte-cocheres, awnings, canopies and all other outdoor display signs of any nature, character or construction whatsoever; application for and issuance of permits therefor; registration of persons engaged in the business of outdoor advertising; fees and bonds for permits, certificates and registrations; inspection of signs and other structures regulated by this article; abatements of unsafe conditions in signs and other such structures; and penalties for the violation of this article.