Merge in Citeproc from CoH IR (plus some docs at merge-time).

From commit b32b1a70059e2c1985aba6c13226b467c4174d0a in CoH's scholar.
Update APA and NIH from CoH, and move some code around.
Fix the CSL admin path.
Fix warning due to removed caching constant.

Also, rename "Coins" file, for naming conventions.
Remove cruft (commented out code).
Integrate RIS transform from CoH.
Fix the use of converter...

...  Still needs testing.
Fix use of alternate RIS exporter, and requirements hook.
Merge remote-tracking branch 'jordan/7.x' into 7.x-merging

Conflicts:
	includes/SolrResults.inc: Baleeted
Fix logic error.
Change the URL for redirect such that if a batch fails we redirect correctly.