[MOV] howto/rdtraining: move "Getting started" to the tutorials dir

This commit also replaces references to the "Building a module"
tutorial by references to the "Getting started" tutorial.

task-2991663

X-original-commit: 4f4e346953
Part-of: odoo/documentation#3660

content/developer/tutorials/getting_started/N_security.rst

@@ -0,0 +1,27 @@
+.. _tutorials/getting_started/N_security:
+
+====================
+Advanced N: Security
+====================
+
+Every day we hear about data leaks and attacks in the newspapers.
+We expect you to be aware and careful about how to avoid security breaches in your future
+developments.
+
+You already defined new models in your training. Did you check the access rights and define record
+rules on it ? Are you sure your module is not an open door to SQL injections ? Did you use getattr
+or t-raw in your code?
+
+- No or wrong access rules on models.
+- Introduction of public methods that should actually be private.
+- Wrong manipulation of access tokens.
+- No or wrong `ir.rules` (restriction rules) on models.
+- Introduction of SQL injections.
+- etc.
+
+Please check this `presentation from Olivier Dony (odo)
+<https://docs.google.com/presentation/d/1oDINxPtHWz31V8-2W0h2u2ubaKgz9lmbyfx9DJI4lTw/edit>`_ about
+common mistakes that you should **absolutely** avoid in your future developments.
+Also, please always use this `security checklist
+<https://docs.google.com/presentation/d/1oDINxPtHWz31V8-2W0h2u2ubaKgz9lmbyfx9DJI4lTw/edit#slide=id.g2faad955b1_0_6>`_
+to double-check your development and avoid further embarrassing issues.