Update trytond.config usage for 3.4 migration

Tryton 3.4 uses extendable server configuration file to
be used by modules. Now nereid also has a section called
`nereid`. Following is an example:

  [nereid]
  re_captcha_public_key = publickey
  re_captcha_private_key = privatekey
Merge nereid-test into nereid

With 3.4 nereid-test module - an optional tryton
module which helps in testing nereid features,
has been merged into core nereid. Just like before
this will not be listed in tryton module list.
Deprecate Database based URL routing

Was due for deprecation in 3.4. Goodbye database routing and
only have route decorator based routing.
Update must be a list of module to update