Allow Observatory to run as a hosted web service

runtime/bin/vmservice/client/lib/src/elements/css/shared.css

 
 /* Global styles */
 * {
   margin: 0;
   padding: 0;
   font: 400 14px 'Montserrat', sans-serif;
   color: #333;
   box-sizing: border-box;
 }
 
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   flex-shrink: 0;
   flex-basis: 30%;
 }
 
 .flex-item-40-percent {
   flex-grow: 0;
   flex-shrink: 0;
   flex-basis: 40%;
 }
 
+.flex-item-50-percent {
+  flex-grow: 0;
+  flex-shrink: 0;
+  flex-basis: 50%;
+}
+
 .flex-item-60-percent {
   flex-grow: 0;
   flex-shrink: 0;
   flex-basis: 60%;
 }
 
 .flex-item-70-percent {
   flex-grow: 0;
   flex-shrink: 0;
   flex-basis: 70%;
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   margin-bottom: 20px;
   background-color: #f5f5f5;
   border: 1px solid #e3e3e3;
   border-radius: 4px;
   box-shadow: inset 0 1px 1px rgba(0,0,0,0.05);
 }
 
 .break-wrap {
   word-wrap: break-word;
 }