Display info in network status when unlinked

When we can't connect due to being unlinked, network status indicator
will show an appropriate informational message and a button to open the
installer window to relink.

// FREEBIE

stylesheets/_index.scss

@@ -49,6 +49,16 @@
         padding: 0.5em 0;
       }
     }
+    .action {
+      button {
+        border-radius: $border-radius;
+        border: solid 1px #ccc;
+        cursor: pointer;
+        font-family: inherit;
+        color: white;
+        background: $blue;
+      }
+    }
   }
 }
 

stylesheets/manifest.css

@@ -763,6 +763,13 @@ img.emoji {
     display: inline-block;
     font-size: 12px;
     padding: 0.5em 0; }
+  .network-status-container .network-status .action button {
+    border-radius: 5px;
+    border: solid 1px #ccc;
+    cursor: pointer;
+    font-family: inherit;
+    color: white;
+    background: #2090ea; }
 
 .conversation-stack {
   padding-left: 300px; }