- a list of repositories to synchronize can be provided
- the first repository is used for software
- transfer project revision with string like
  [repo x]=[commit count x]-[hash x],[repo y]=[commit count y][hash y]
- change related to new structure :
  recipe slapos.recipe.erp5testnode is inside slapos.cookbook egg
- allow authentification setting for several repositories
- drop support for svn

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.