- Fix namespace drop down to save the namespace last selected (and validate)

- Add a "can_create_repo" entry to the organization and have orgs grayed out in the new repo view if the user cannot create a repo
- Fix the multiple-orgs bug in the model
- Have the "create new repository" button disappear on landing if the org is selected and the user does not have create permissions for that org

static/directives/namespace-selector.html

@@ -10,11 +10,17 @@
     {{namespace}} <span class="caret"></span>
   </button>
   <ul class="dropdown-menu" role="menu">
-    <li ng-repeat="org in user.organizations">
+    <li class="namespace-item" ng-repeat="org in user.organizations"
+        ng-class="(requireCreate && !namespaces[org.name].can_create_repo) ? 'disabled' : ''">
       <a class="namespace" href="javascript:void(0)" ng-click="setNamespace(org)">
         <img src="//www.gravatar.com/avatar/{{ org.gravatar }}?s=24&d=identicon" />
-        <span class="namespace-name">{{ org.name }}</span>
+        <span class="namespace-name">{{ org.name }}</span>    
       </a>
+
+      <i class="fa fa-exclamation-triangle" ng-show="requireCreate && !namespaces[org.name].can_create_repo"
+         title="You do not have permission to create repositories for this organization"
+         data-placement="right"
+         bs-tooltip="tooltip.title"></i>
     </li>
     <li class="divider"></li>
     <li>