Updates to Song Layouts

Couple of changes for songs:

1. On request from a Ukulele teacher I have added a layout that gives the mini chord diagrams above the song but with no chord name. The request was to allow a mid way point between no chords and names on the path to fully learning a song
2. There are a lot of features that allow you to reduce the space taken in a song for when you want to produce a PDF – line space, font size, heading size etc. I have added a feature to remove some of the blank lines and padding at the top of the PDF to reduce this further

These are both in the Layout menu

I have also fixed a long running but rare bug that could see EDITs disappear when scrolling

NOTE: the scrolling ONLY, ONLY, ONLY works properly for INLINE chords – there are various issues if you use any of the chords or names above options. At this time I will NOT be modifying that