Reorganised arms and cuffs

Moved Cuff layer below arm layer to square off join between arm and
cuff.
Merge branch 'Sleeves-and-Cuffs'
Merge branch 'master' into Sleeves-and-Cuffs
Merged sleeves changes into master

Completed sleeves and cuffs changes and merged back into master
Completed Sock Group
Merge branch 'Sock-Adjustment'