Database schema internationalization, step 2

Translate database schema (table and column names)
into English.

Step2:
- translate the dns.network (old: dns.reseau) and
    dns.p_network (old: dns.dr_reseau) tables and
    column names
- translate tri and network parameters in CGI forms
    and %...% holes
- begin to update implicit constraint names by
    removing old constraints (on old table names)
    and rebuild them with the new table names