sales return validate before save/submit
Merge branch 'master' of github.com:webnotes/erpnext
[gross profit] [request] added Avg. Buying Rate column
Merge branch 'aii_release' of github.com:webnotes/erpnext into aii_release
Merge branch 'aii_release' of github.com:webnotes/erpnext into aii_release
[aii] [patches] minor fixes