[Trunk | Admin Tools]:
a. In "hello()" method added @RequestMapping (except for existing ""), "/health_check".
b. Added method "checkEverything()" (/health_chech/advanced) only accessible by PORTAL ADMINS which checks connection with db and prints properties.
2. Layout.java: Commented all fields for layout configuration (e.g. mainColor, buttons,...) and added an Object layoutOptions which includes any required options.