Step aside, Mr. Blackwell. This year we learned that DCist readers have strong opinions about fashion and you’re not afraid to share them. From the White House to the workplace, one of the year’s most surprisingly controversial fashion topics was…flip flops. In fact, some readers seem to dislike the ubiquitous rubber and PVC summer staples as much as we abhor white shoes. We thank you, our fashion conscious readers, for helping us debate the relative…