Create ja_JP.lang

Started translation to Japanese.
Merge pull request #352 from genms/ja_JP-1

Create ja_JP.lang
Update pt_BR.lang
Update ko_KR.lang
Merge pull request #365 from jinwoo829/patch-1

Update ko_KR.lang
Update pt_BR.lang
Merge pull request #388 from BrunoLG/master

Update pt_BR.lang
Update pt_BR.lang
Update ko_KR.lang
Merge pull request #402 from jinwoo829/patch-2

Update ko_KR.lang
fr-FR: removed conflict markers.
fr-FR: fixes.
fr-FR: oeu => œu.
fr-FR: Il y'a => Il y a.
fr-FR: fixed punctuation whitespaces.
fr-FR: use an unbreakable space (U+00A0) before punctuation marks.
Merge pull request #405 from Adirelle/fr-FR-updates

fr-FR updates
fr-FR: more updates.
fr-FR: do not use "œ" in item names to prevent some issues with the creative panel.
fr-FR: more updates.