Odoo Release Updates

[FIX] purchase: add compute method to technical_price_unit

[IMP] account_purchase: improve the form and list views of bills

[REF] *: remove `uom.uom.rounding` field

[ADD] purchase_alternative*: separate alternative from purchase_requisition

[IMP] core,*: make 'Product Price' a minimum precision

[FIX] purchase: fix multi-company error msg for RFQ

[IMP] purchase: display RFQ billing status as tag

[FIX] purchase, sale: show sale warning message from partner's company

[IMP] product: Update the product import template

[REF] base: make 'is_company' computed, remove company_type

[ADD] base: update apps icons

[IMP] product, purchase*: Suggest qty in pricelist UoM

[IMP] product: Stock without Stock module

[IMP] web, *: improve TextInput on touch and desktop

[IMP] mass_mailing, *: template previews & mailing targets

[IMP] purchase: recompute date_planned if overdue

[IMP] purchase_requisition: add missing hotkeys

[FIX] product: fix discounted price for templates

[IMP] purchase: hide payment terms on PO report when not set

[IMP] product, *: Use new stock fields in smart buttons

[IMP] stock: Keep stock values on stock uninstall

[IMP] sale,sale_stock: Add SO line availability widget without stock

[IMP] *: Remove the old syntax of t-call

[IMP] purchase_{stock}: improve UX of purchase order form view

[IMP] sale,purchase: More delivery functionalities without stock

[IMP] product,*: Incoming, outgoing and forecasted field without stock

[IMP] base: remove SELF_READABLE_FIELDS and SELF_WRITEABLE_FIELDS

[IMP] orm: SQL alias to ease building queries

[IMP] orm: use SQL alias for Model._read_group_select

[IMP] account, *: match optional='hide' columns