Added application and project roles validation for API procedure calls

app/Api/Procedure/AppProcedure.php

@@ -0,0 +1,47 @@
+<?php
+
+namespace Kanboard\Api\Procedure;
+
+/**
+ * App API controller
+ *
+ * @package  Kanboard\Api\Procedure
+ * @author   Frederic Guillot
+ */
+class AppProcedure extends BaseProcedure
+{
+    public function getTimezone()
+    {
+        return $this->timezoneModel->getCurrentTimezone();
+    }
+
+    public function getVersion()
+    {
+        return APP_VERSION;
+    }
+
+    public function getDefaultTaskColor()
+    {
+        return $this->colorModel->getDefaultColor();
+    }
+
+    public function getDefaultTaskColors()
+    {
+        return $this->colorModel->getDefaultColors();
+    }
+
+    public function getColorList()
+    {
+        return $this->colorModel->getList();
+    }
+
+    public function getApplicationRoles()
+    {
+        return $this->role->getApplicationRoles();
+    }
+
+    public function getProjectRoles()
+    {
+        return $this->role->getProjectRoles();
+    }
+}