Tool icon selectors don't all start with "icon-sakai"

So there is an issue in that some tools don't start with "icon-sakai", and "icon-" would just be too wide open.

Alternatives are:

• adding some additional selectors that restrict where icons can be used

  @if $skin-with-icons {
  	.Mrphs-toolsNav__menuitem--icon,
  	.Mrphs-breadcrumb--icon,
  	ul li .selectedToolTitle i,
  	.removeTool,
  	.Mrphs-sitesNav__submenuitem-icon .toolMenuIcon {
  		@extend .fa-lg;
  		@extend .fa;
  	}
  ....
  }
  

• changing the name of the selector to add more entropy
  requires changes to the source locations where icons are used.