[RIS] Process one entry at a time, not line by line
In preparation for ProCite support
[RIS] Add support for ProCite. Add support for series number/volume.
[RIS] Add "getCollections" hack to export items in subcollections
[RIS] Import EndNote's Journal Article issue. Closes #672
Merge pull request #667 from aurimasv/ProCite-RIS

Add ProCite support to the RIS translator