Add styling for overflowing table & dropdown robot

Bound modal box by container, remove !important

The important was introduced as a fix to
https://jira.coreos.com/browse/QUAY-881
However, after removal it does not seem to be necessary (Cannot
reproduce with the !important gone).

Adds bounding for the modal boxes & title

Joins the username/password for robot in box

static/css/quay.css

@@ -1510,7 +1510,7 @@ p.editable:hover i {
 }
 
 .copy-box-element .copy-container {
-  border-radius: 4px !important;
+  border-radius: 4px;
   border: 1px solid #ddd;
   position: relative;
 }