Credit: Getty ImagesYour shower tiles put up with a lot. From daily moisture and soap residue to hard water and the occasional bout of mold creeping into the grout lines, they take quite a beating—and need to be taken care of accordingly.And while a quick rinse might keep things looking passable, a true clean requires a little more intention. Left unaddressed, soap scum, mildew, and mineral buildup can not only make your shower look dingy, but a…