[trunk] Backward compatibility: copyright from 0.9.6.x/1.0 score contains extra text

Setup: MuseScore rev. 4108, both under Ubuntu 9.10 and Win XP

Step: Open with trunk any 0.9.6.3 or 1.0 score containing a copyright text, for instance the attached one (which contains almost nothing else than a copyright notice!)

Result: the copyright text contains extra text, namely all the values of the various properties of the <copyright> tag and part of the HTML markup.

Expected result: the copyright text only contains the *real* copyright test.

Note: this may seem a minor issue, and in itself it surely is. However the number of backward compatibility issues (i.e. of things needing manual fixing when reading with trunk an older score) is increasing: page number -> header and footer, frame margins, frame text positions... Some cannot be fixed; but other can.

Thanks,

M.