Adjustements on Markers scenario (now displays a "teacher" markers row) + Added a new "markers_teacher" scenario to edit the teacher markers and browse user markers
// 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;
}