#1179 Export : RIS Format : better compatibility

[fdar]

Currently, RIS export filter use the tag T1 for the authors field and Y1 for publication year field.
It looks like (http://meerkat.adeptscience.co.uk/KnowledgeBase/KnowledgeBaseMk4.NSF/cbaf0788e6c2caa780256ddc004b746b/60df1dcd3f4dc07d80256e38004fe4f0/$FILE/Direct%20Export%20RIS.pdf,

https://en.wikipedia.org/wiki/RIS_(file_format)
) :

• TI is more common for authors
• YP is more common for publication year