Genome Work Log

• Added context menus to main song view (for 'add track') and for track info area (delete/rename)
• made it possible to delete tracks (wasn't before)
• fixed: double click to add new song markers between other markers

Next up:

• make 'open song' work on other menus
• implement a 'rename' dialog box
• implement an 'overwrite - yes / no?' dialog box
• add tempo box