Update locale.xml

Translation updated
*7846* updated de_DE locale, lockss
Merge pull request #317 from mtub/20140923-updated-de-locale

*7846* updated de_DE locale, lockss
Merge pull request #316 from ulsdevteam/fix-usagestats-loader-return-value

*8917* return parent's return value in usageStatLoader's scheduled task
Merge pull request #313 from ppv1979/ojs-dev-2_4

added ru_RU translation + fixed error in en_US locale
Merge pull request #312 from josekarvalho/patch-9

Update pt_PT locale key
*8926* Exclude DuraCloud .git directory from build
*7846* updated de_DE locale, PKP PLN plugin
Merge pull request #320 from mtub/20140928-updated-de-locale

*7846* updated de_DE locale, PKP PLN plugin
*8935* Add option to retrieve statistics adding metric types
Merge pull request #325 from beghelli/8935-fix

*8935* Add option to retrieve statistics adding metric types
Merge branch 'ojs-stable-2_4_5' of https://github.com/pkp/ojs into uls-install