(refs #74)Add the web hook configuration page.

src/main/twirl/settings/hooks.scala.html

@@ -0,0 +1,16 @@
+@(repository: service.RepositoryService.RepositoryInfo)(implicit context: app.Context)
+@import context._
+@import view.helpers._
+@html.main("Settings", Some(repository)){
+  @html.header("settings", repository)
+  @menu("hooks", repository){
+    <h3>WebHook URLs</h3>
+    <form method="POST" action="@url(repository)/settings/hooks/add" validate="true">
+      <div>
+        <span class="error" id="error-url"></span>
+      </div>
+      <input type="text" name="url" id="url" style="width: 300px; margin-bottom: 0px;"/>
+      <input type="submit" class="btn" value="Add"/>
+    </form>
+  }
+}