check if this account is admin when get navbar

templates/explore/navbar.tmpl

@@ -4,11 +4,13 @@
 		<a class="{{if .PageIsExploreRepositories}}active{{end}} item" href="{{AppSubURL}}/explore/repos">
 			<span class="octicon octicon-repo"></span> {{.i18n.Tr "explore.repos"}}
 		</a>
+		{{if .IsAdmin}}
 		<a class="{{if .PageIsExploreUsers}}active{{end}} item" href="{{AppSubURL}}/explore/users">
 			<span class="octicon octicon-person"></span> {{.i18n.Tr "explore.users"}}
 		</a>
 		<a class="{{if .PageIsExploreOrganizations}}active{{end}} item" href="{{AppSubURL}}/explore/organizations">
 			<span class="octicon octicon-organization"></span> {{.i18n.Tr "explore.organizations"}}
 		</a>
+		{{end}}
 	</div>
 </div>