[FIX]stock_ux: verbose messages and calculation of demand

[fw-bot-adhoc]

Forward-Port-Of: #867

[roboadhoc]

[fw-bot-adhoc]

@jcadhoc @mav-adhoc cherrypicking of pull request #867 failed.

stdout:

Auto-merging stock_ux/models/stock_move.py
CONFLICT (content): Merge conflict in stock_ux/models/stock_move.py
Auto-merging stock_ux/models/stock_move_line.py
CONFLICT (content): Merge conflict in stock_ux/models/stock_move_line.py

Either perform the forward-port manually (and push to this branch, proceeding as usual) or close this PR (maybe?).

In the former case, you may want to edit this PR message as well.

⚠️ after resolving this conflict, you will need to merge it via @roboadhoc.

More info at https://github.com/odoo/odoo/wiki/Mergebot#forward-port

[fw-bot-adhoc]

@jcadhoc @mav-adhoc this forward port of #867 is awaiting action (not merged or closed).

[fw-bot-adhoc]

@jcadhoc @mav-adhoc this forward port of #867 is awaiting action (not merged or closed).