Code updated to make this plugin available on version 2.5.2
Beutify code and add more information to README
Update fr.yml

updated french locale
Update cs.yml

Updated Czech translation.
Update zh locale.
Adding Japanese translation
Russian translation fixes
Duplicate manually: https://github.com/bradbeattie/redmine-graphs-plugin/commit/ea23fa9776a724e978742b7b73bebc61e45fcb2f