Tiny DocString update

Wrong example in DocString for 'u(...)'
Update Russian translation (pull-request #321)
ja_JP locale support
Fix RSS Feeds

feed() still calls getAll() which was renamed to getProject() in 286b1935663ef3071ad6a0aae3078ad3a42b48e4
Update Swedish translations
Merge pull-request #330 (Japanese translation)
Merge pull-request #331 (RSS feed fix)
Merge pull-request #332 (Update Swedish translation)
Update Readme and sync locales
Update PicoDb
Add Danish translation (pull-request #336)
Update Chinese translation (pull-request #334)
Add contirbutor
Fix broken links (Markdown content) for public boards (#319)
Updated Danish translation

Finished up all translation into danish