updated settings list design to match comps

src/sass/main.scss

@@ -990,6 +990,7 @@ input[type=number] {
 @import "views/tab-home";
 @import "views/tab-receive";
 @import "views/tab-send";
+@import "views/tab-settings";
 @import "views/walletDetails";
 @import "views/bitpayCard";
 @import "views/wallet-backup-phrase";

src/sass/views/tab-settings.scss

@@ -0,0 +1,30 @@
+#tab-settings {
+  .list {
+    .item {
+      color: #444;
+      border-top: none;
+      padding-top: 1.5rem;
+      padding-bottom: 1.5rem;
+      &:before {
+        display: block;
+        position: absolute;
+        width: 100%;
+        height: 1px;
+        background: rgba(221, 221, 221, 0.3);
+        top: 0;
+        right: 0;
+        content: '';
+      }
+      &.item-heading {
+        &:before {
+          top: 99%
+        }
+      }
+      &:nth-child(2) {
+        &:before {
+          width: 0;
+        }
+      }
+    }
+  }
+}