Create archiv-fur-die-civilistische-praxis.csl

Some issues in the style guide for this journal not implemented automatic but have to be handled manually, e.g. "Festschriften" should not mention editors (i.e. delete them manually), pages for journal article should maybe more fuzzy like "328 ff".
Update archiv-fur-die-civilistische-praxis.csl
Merge pull request #1236 from zuphilip/patch-1

Create archiv-fur-die-civilistische-praxis.csl