xtrabackup software is patched to allow no runtime autodetection of backup
backend. Thanks to this software release coder will be able to choose exact
version of backup backend according to its needs.

Stack is non instantiantable.

slapos.recipe.template has less dependencies than slapos.cookbook, which does
not force to compile lxml during recipe building.

Branch 'erp5' is used to work on ERP5 instantiation in SlapOS.

It is required to override-update command as section is being update.

As slapos.cookbook provides different modules it is required to correctly
select when egg is wanted and when its module selected.

This is workaround for SlapOS limitation of development environment.

No warnings, the page looks quite readable.

Mostly formatting changes and few obvious mistakes.

Initialise once with slapos.recipebox.
Do not use extras, as not required.