feat(docs): disabling selected route

packages/docs/src/app/components/footer/footer.component.html

@@ -4,7 +4,7 @@
             <span class="docs-footer__text">© 2019 Positive Technologies</span>
             <span class="docs-footer__text">Code licensed under an <a class="docs-footer__link" href="//github.com/positive-js/mosaic/blob/master/LICENSE" target="_blank">MIT-style License</a>.</span>
         </div>
-        <div class="docs-footer__icon">
+        <a  class="docs-footer__icon" href="//github.com/positive-js/mosaic/" target="_blank">
             <svg version="1.1" id="Capa_1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"
                   viewBox="0 0 438.549 438.549" style="enable-background:new 0 0 438.549 438.549;"
                  xml:space="preserve">
@@ -16,6 +16,6 @@
                         c-6.191,7.521-13.901,13.85-23.131,18.986c-9.232,5.14-18.182,8.85-26.84,11.136c-8.662,2.286-18.415,4.004-29.263,5.146		c9.894,8.562,14.842,22.077,14.842,40.539v60.237c0,3.422,1.19,6.279,3.572,8.562c2.379,2.279,6.136,2.95,11.276,1.995		c44.163-14.653,80.185-41.062,108.068-79.226c27.88-38.161,41.825-81.126,41.825-128.906		C438.536,184.851,428.728,148.168,409.132,114.573z"></path>
                 </g>
             </svg>
-         </div>
+        </a>
     </div>
 </div>

packages/docs/src/app/components/sidenav/sidenav.scss

@@ -61,5 +61,10 @@
 
             &:hover, &:active, &:focus { text-decoration: none; }
         }
+
+        &-selected {
+            pointer-events: none;
+            cursor: default;
+        }
     }
 }