- use lang of the context for the language of the client and store it in the .terprc
- change en_EN in en_US which is the standard
bzr revid: ced-bf07a4a200daf6fe371271d9c046799a4a2578fe
- new object to define versatile access rules.
- provide cache to keep fast access.
- associated with user or user group.
The orm layer is modified to use them. This modification and
pre-defined rules in xml data replace the most part of implicit magic
around company_id.
bzr revid: bch-73e82904c54c3ad4f5a7454a446af30572ae156d
ced