[OJS.de bugs] Adapt Datacite export plugin to new Datacite API
Merge pull request #64 from jerico-dev/datacite-api-change-stable-2_4

*8100* [OJS.de bugs] Adapt Datacite export plugin to new Datacite API
*8102* Custom Locale Plugin settings fatal error / custom strings do not display
*8107* fr_CA locale updates
*8108* miscellaneous locale updates
*7846* added de_DE locale for new backup plugin, re: 9522c2e61e
*7846* updated de_DE locale for referral plugin, re: 115dd2d0b6
*7846* updated de_DE locale for sword plugin, re: c046b68ce9
*7846* updated de_DE locale for datacite plugin, re: a64153472b
Merge pull request #67 from mtub/20130207-de-locale-updates

20130207 de locale updates
*8111* es_ES locale updates
Merge branch 'ojs-stable-2_4' of github.com:pkp/ojs into ojs-stable-2_4
*8111* fixing copyright dates for es_ES locale
*4169* Fix issue galleys and issue custom identifiers issue
*6564* explicitly set completed date for layout editor proofreading signoff
*6899* fix review assignment totals when article is no longer under review
*8114* ca_ES locale updates
*8114* ca_ES locale cleanup
*8113* Sort direction for users
*8116* Editor search bug