Fixed User role_for_project method
Modified logged_in_user_membership controller method so that it returns a role
Various code cleaning, mainly on User, Permission and IssueStatus models.
Patch 9725 Email templates of chinese simplified (Andy Wu)
Feature #9808 Allow user to "change" issue status to the same status
Fixed 9793 Preview fail for first wiki page of a project
Added subprojects issue count on project "Reports" page
Fixed pagination on users/list (status filter lost)
Slight modifications on revisions table
Feature 9784 Set status when raising issue.
