Multi is the default api for methods, it is not necessary to explicitly
decorate methods with it, adds clutter and most people use it because
they see that the rest of the code uses it.
Done with `find . -type f -name '*.py' | xargs sed -i '/@api.multi/d'`
The built-in Odoo profiler can be used directly into the logs. This
information was not given in the documentation. This commit add it. An
example on how to use is shown as well as the produced result.
Adrian Torres