minor CSS changes to the admin menu

[kleffdortmund]

the admin-menu and the main-menu overlap in the top-left corner. To avoid this you can add some css to the admin.css file:

.admin-menu {
z-index:1;
position: fixed;
background-color: #176583;
height: 100%;
top: 0px; ---> change
padding-top:100px; --> new, the value is not that important but should > 60px;
width: 60px;
}
// just to give the first child a top-border
.admin-menu .nav{
border-top: solid 1px #217D99;
}