Changes
- Update French, Russian, and Brazilian Portuguese messages

Bug Fixes
- Fix Jumper and Runner abilities applying to the wrong skill
- Fix error when parsing some damage source cause values
- Fix idle action bar message not updating on reload
- Fix skull profile missing error when opening leaderboard menu
- Update stats on join on the main thread to fix errors

API Changes
- Add api methods to load and save offline users
- Use UserManager#loadUser to load a user into memory
- Use SkillsUser#save to save the user to storage asynchronously