Avoid getting doubled slashes in theme paths with not set theme variable.
Now you can leave the theme config variable empty and put the theme directly into the theme path and save one directory level when you have a single theme anyway.
Merge pull request #1379 from rarila/themepath

Avoid getting doubled slashes in theme paths ...
Fixes #839. When editing users, show 'updated' instead of 'added'.
Correct check for 'added' and 'updated' log message.
Merge pull request #1385 from xiaohutai/master

Correct log message for creating a new user and editing an existing user