Don't segfault if no data files are found.

Review Request #120932 - Created Oct. 31, 2014 and submitted - Latest diff uploaded

Information
Jeremy Whiting
kanagram
master
f3212d3...
Reviewers
kdeedu

TODO: After string freeze is over, we can add a nice message saying
why the ui is blank.

It runs and doesn't crash on startup when kdeedu-data kvtml files aren't found.

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