Update de.yml
Merge pull request #11 from cforce/patch-1

Update de.yml
Update _history.html.erb

fix nil exception if issue has no timelog object
Merge pull request #12 from cforce/patch-2

Update _history.html.erb
Merge pull request #2 from markedagain/master

Merge markedagain/redmine_issue_detailed_tabs_time