Made sliding screens behaviour work. Completed upside of Factory 7.
Merge branch 'master' of https://github.com/jokigenki/Foxtrot

# By Tim Frost
# Via Tim Frost
* 'master' of https://github.com/jokigenki/Foxtrot:
  Slight fiddle to the Farm Boss Key level
  BG Farm 1_3 update and BG Farm Boss Key added
  Update to Farm 1_3 BG
  Commit before updating. Negligible changes?

Conflicts:
	snippets/list.xml.bak