[hooks] manhandle the parsed rql query, not its string representation
... and add a groupby clause to make it actually work (the selection
might well use an aggregate function, so we need to tell the backend to
group on our target entity).
Closes #5362574
\.svn
^build$
^dist$
\.pyc$
\.pyo$
\.bak$
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\~$
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\.swp$
^doc/book/en/apidoc$
\.old$
syntax: regexp
.*/data/database/.*\.sqlite
.*/data/database/.*\.config
.*/data/database/tmpdb.*
.*/data/ldapdb/.*
^doc/html/
^doc/doctrees/
^doc/book/en/devweb/js_api/
data/pgdb/