make EBSCO work in discovery layers, even in guest mode. Replaces https://github.com/zotero/translators/pull/598
write journal title if there are no journal abbreviations
add Figshare translator
Merge pull request #628 from adam3smith/bibtex-abbr

write journal title if there are no journal abbreviations
Merge pull request #623 from adam3smith/ebsco2-discovery

make EBSCO work in discovery layers, even in guest mode.