Added russian localization.
Merge pull request #2 from Undev/feature/ru-localization

Added russian localization.
Fixed bulk edit issue: @project can be nil if there is more than one project in bulk
Merge pull request #3 from Undev/feature/fix-bulk-edit-issue

Fixed bulk edit issue (possible ActionView::TemplateError: undefined method `default_version' for nil:NilClass)
Simplified Chinese added on 26/09/2012 for branch master

Simplified Chinese added on 26/09/2012 for branch master
Merge pull request #4 from archonwang/master

Simplified Chinese added on 26/09/2012 for branch master
Fixed tests for redmine 2.2