Patch the chicago-author-date.csl file to place a space after a comma when editors are included in book chapters and conference papers.  #2152
Update hook to update the chicago-author-date.csl file in the biblio_citeproc table.  The style is stored in the DB and doesn't appear to update automagically when a csl file is changed, looks like it needs to be manually updated.  #2152
Merge pull request #2171 from openscholar/2152-fix-missing-citation-space_newPR

Fix missing space in citation after comma.