Minor changes to css + code cleanup + preparing ldt_annotate serializer for editing annotation
// Horizontal dividers
//
// Dividers (basically an hr) within dropdowns and nav lists
.nav-divider(@color: #e5e5e5) {
height: 1px;
margin: ((@line-height-computed / 2) - 1) 0;
overflow: hidden;
background-color: @color;
}