*8648* *8683* Reverting crossref automated deposit and article scheduling

This will have to be tested carefully. Note in particular some changes to the Datacite and quicksubmit plugins, as well as changes to issue/article scheduling.
*8648* *8683* Reverting crossref automated deposit and article scheduling
Merge pull request #176 from pkp/revert244

*8648* *8683* Reverting crossref automated deposit and article scheduling