feat(design): polish all settings views

Closes #424

www/img/icon-link.svg

@@ -5,7 +5,7 @@
     <desc>Created with sketchtool.</desc>
     <defs></defs>
     <g id="Page-1" stroke="none" stroke-width="1" fill="none" fill-rule="evenodd">
-        <g id="Icons" transform="translate(-712.000000, -769.000000)" stroke="#8F8F90">
+        <g id="Icons" transform="translate(-712.000000, -769.000000)" stroke="#666677">
             <g id="ui-24px-outline-2_link-69" transform="translate(713.384615, 770.000000)">
                 <g id="Group">
                     <path d="M8.1,3.6 L10.35,1.35 C12.06,-0.36 14.94,-0.36 16.65,1.35 L16.65,1.35 C18.36,3.06 18.36,5.94 16.65,7.65 L14.4,9.9" id="Shape"></path>
@@ -15,4 +15,4 @@
             </g>
         </g>
     </g>
-</svg>
+</svg>