Also remove data in account_numergy

Add some help

- "Structure" -> "Structures"

Structures can now be restricted to one company. Bound dimensions: added the code_ref_ids (and code_ref_module) options to generate external IDs for all analytic codes of the dimension.

Added 'usable' field in analytic.code. Analytic fields now filter out the codes with usable=False rather than those with children. Added the rel_name and rel_usable options for bound dimensions.

Fields generated by MetaAnalytic now exclude codes with children. Fixed some issues when selecting the parent and dimension of a new analytic code. Added a new 'translate' option.

When creating a code, the parent cannot be selected (readonly) if the code's dimension is not selected (code view) or not a record in the database (dimension view, while creating a new dimension).

Added descriptions to models. Added a 'translate' option to enable/disable translation of analytic code and dimension names (default: False). Fields generated by the metaclasses now have a common placeholder string value. Cleaned up the translation file.

Analytic scructures can now use different ordering values for the same dimension. Models that use analytic code fields should now use conditions on nd_id.ns{n}_id.model_name in the domain for those fields.

Added a parent-child hierarchy on analytic codes. Fixed a bug where analytic codes without a description couldn't be selected.

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