(a) No person shall occupy any portion of any street, alley or sidewalk for the purpose of temporarily storing building materials without first obtaining a permit for such temporary use from the governing body.
(b) No person may use any portion of any sidewalk or street right-of-way for the purpose of displaying or offering for sale wares, goods, merchandise or other items. Nothing in this article, however, shall be construed as prohibiting the city governing body from temporarily waiving the prohibition of this subsection (b) in connection with community promotions or community-wide celebrations when such waiver is considered to be in the best interest of the city.