Update iso690-numeric-fr.csl

Delete ANON. for documents with no author.
Small bug fixes on some fields display.
Update iso690-numeric-fr.csl
Update iso690-numeric-fr.csl
Update iso690-numeric-fr.csl
Update iso690-numeric-fr.csl
Update iso690-numeric-fr.csl
Update iso690-numeric-fr.csl
Update iso690-numeric-fr.csl
Merge pull request #520 from grolimur/patch-20

Update iso690-numeric-fr.csl