Left-aligned lyrics on whole note align with whole note, not other lyrics

Ubuntu 14.04, GIT commit: c169cc2

This picture tells the story well:

The top lyric is on the top (whole) note and aligns well with it, the bottom lyric is on the bottom (quarter) note and aligns well with it. But it would look better if the lyrics aligned with each other. We could get this behavior by aligning the lyric on the whole note "as if" it were a quarter note. That means in cases where there there are no other notes or other lyrics to compare to, it will look like we missed our left alignment slightly, but I'm thinking that's better than current situation.

If we do this, it will also fix anomalies like http://musescore.org/en/node/45341, where we are seeing the same misalignment but it's less obvious because the whole note is offset.