Small UI improvements to the teams tab

static/directives/popup-input-button.html

@@ -1,4 +1,4 @@
-<button class="btn btn-success" data-trigger="click"
+<button class="btn btn-primary" data-trigger="click"
         data-content-template="/static/directives/popup-input-dialog.html"
         data-placement="bottom" ng-click="popupShown()" bs-popover>
   <span ng-transclude></span>

static/directives/teams-manager.html

@@ -1,8 +1,9 @@
 <div class="teams-manager-element">
     <span class="popup-input-button" pattern="TEAM_PATTERN" placeholder="'Team Name'"
           submitted="createTeam(value)">
-      <i class="fa fa-group"></i> Create Team
+      <i class="fa fa-plus" style="margin-right: 6px;"></i> Create New Team
     </span>
+    <h3>Teams</h3>
 
     <div class="team-listing" ng-repeat="(name, team) in organization.teams">
       <div id="team-{{name}}" class="row">