[rset] Always complete attribute/relation caches in ResultSet.get_entity RQL queries are often designed to fill up the ORM's caches when fetching entities out of the result set. Until now, if an entry already existed in the entity cache, ResultSet.get_entity would return it unchanged, not using the new ResultSet's contents to update the attribute cache, breaking expectations (if the attributes are needed, they'd then be fetched later one at a time, one entity at a time), resulting in loads of DB accesses. So we change ResultSet.get_entity so that: * if the entity is already cached and has been instantiated from the same rset, it is returned as-is (to avoid loops) * if the entity is not yet cached, it is instantiated * if the entity is cached via another rset, its attribute/relation caches are completed Closes #9942503

Javascript Coding Standards
---------------------------

(Draft, to be continued)

:Naming: camelCase, except for CONSTANTS

Indentation rules
~~~~~~~~~~~~~~~~~
- espace avant accolade ouvrante

- retour à la ligne après accolade ouvrante (éventuellement pas
  de retour à la ligne s'il y a tout sur la même ligne, mais ce n'est
  pas le cas ici.

- no tabs


Documentation
~~~~~~~~~~~~~
XXX explain comment format for documentation generation


Coding
~~~~~~
- Don't forget 'var' before variable definition, and semi-colon (';') after **each** statement.
- Check the firebug console for deprecation warnings


API usage
~~~~~~~~~
- unless intended, use jQuery('container') rather than jqNode('container')


See also
~~~~~~~~
http://google-styleguide.googlecode.com/svn/trunk/javascriptguide.xml