[!!][BUGFIX] Fixed regex to detect filenames

Files with dots in the filename were not detected as such
while searching for them in the database. They were
wrongly marked as orphaned due to this bug.

Appropriate reminder: Use this extension at your own risk.
[FEATURE] Change regex to detect UTF8 filenames

Change regex to detect filenames like »foo_äöüß.gif«
in text- or input fields as well.
[TASK] Set version to 0.3.3