Add Images or Icons to Sidebar links

Sidebars are sometimes crowded with lots of text. There are many ways to make some of the items stand out. In my case, I decided that I will add icons next to the links, to differentiate links from normal text. I will also draw a thin line after each link. To be consistent, the color of these lines shall be the border color.Note: This is the style we used for our Minima template. Since each