team setting and postgres constraint

client/assets/styles/styles.less

@@ -102,7 +102,7 @@ nav h2 {
 
 nav hr {
     margin: 1em 0;
-    border-color: whitesmoke;
+    border-color: #444;
 }
 
 nav button {
@@ -120,12 +120,12 @@ nav button.active {
 }
 
 nav button[disabled], nav button[disabled]:hover {
-    color: #333333;
+    color: #333;
     text-decoration: none;
 }
 
 nav button:hover {
-    color: #888;
+    color: whitesmoke;
     text-decoration: underline;
 }