First dictionary entry cannot be viewed

This was raised a couple of weeks ago in a post from John. I will check in the simple fix if that is okay.

John:
With And-Bible, reading of the first dictionary key of dictionaries is failing because of: dictbook.contains(key).

The fix is in JSword's AbstractKeyBackend.java:

    public boolean contains(Key key) {
        return indexOf(key) > 0;
    }

This should apparently be:

indexOf(key) >= 0;

This fixes the problem in And-Bible.

DM:
Thanks.
Some of the dictionaries have an intro for the first entry or have an empty first entry. My guess is that this attempted to account for that.