Translation updates * pt-BR (#4229) * ru * zh-TW (#4236)
Changes misleading scopes on Enumeration.
Fixed roadmap progress display error (#4255).
Backported r3080 from trunk (#4248).
Reset session on login/logout (#4248).
Reverts r3014 (CodeRay back to 0.7.6).
Load roles when loading project members.
Avoid useless database queries.
Add a setting to pick alternative Gravatar images. #2734
Copy issue status on project copy (#3877).
