Explicitly specifiy that quantities are in product uom

Otherwise the Search More view will crash for example for sale order line because it will fetch the price of all products and then try to convert uoms for pricelist rule application without checking uom compatibility

[FIX] product: pricelists based on the supplier prices now return first supplier price if partner not in suppliers instead of returning 0

Without this, sale pricelists cannot be based on supplier prices as the partner is never a supplier so the price would be 0
Note: behavior change ok with fp

The price_surcharge attribute must be computed based on the reference unit of measure (divided by the factor).
This is to make sure than 12 units and 1 dozen have the same price after pricelist computation (opw 599727).

Added test checking the correctness of pricelist computation based on unit of measures.

[FIX] product_visible_discount: fix display of unit price according to rule base price like in 7.0 as requested by gab

A squashed merge is required as the conversion of the apiculture branch from
bzr to git was not correctly done. The git history contains irrelevant blobs
and commits. This branch brings a lot of changes and fixes, too many to list
exhaustively.

- New orm api, objects are now used instead of ids
- Environements to encapsulates cr uid context while maintaining backward compatibility
- Field compute attribute is a new object oriented way to define function fields
- Shared browse record cache
- New onchange protocol
- Optional copy flag on fields
- Documentation update
- Dead code cleanup
- Lots of fixes

[IMP] product: refactoring of product variant. The main view became the view of product template and the product product (or product variant) are created with the variant values combinaison. Bom is splitted into bom and bom line and can use the variant combinaison.

[FIX] product: overwritten name_search of product.pricelist ignored lang translations. It worked prior to saas-3 because the pricelist filter in the searchview used a selection widget, which did not care about translations

bzr revid: dle@openerp.com-20140317120126-qx4wrkqfdu3nr3sp

"The only man who makes no mistakes is the man who never does anything. ~T.R." ;-)

bzr revid: odo@openerp.com-20140306190906-k8wjr9urekpoy7ch

bzr revid: mat@openerp.com-20140306162953-iu7k53i5zsllokdp

bzr revid: mat@openerp.com-20140305171456-goo7on3ncfihu0wu

[FIX] product: price_get_multi raise if there is no active pricelist version (same behavior than before the pricelist computation factoring)

bzr revid: dle@openerp.com-20140305110314-pgiotwksjmdt63zm

[FIX] product.pricelist: leftover undefined variable from pricelist refactoring at revid:fp@tinyerp.com-20131206221809-x1muf0wonl4ated0

bzr revid: odo@openerp.com-20140212175224-wd9etr8xyrg6l0oz

[FIX] pricelist: correctly take into account uom when computing pricelists based on supplier price on product form (opw 595881)

The previous behaviour used the uom of product while it could be a different one selected (by default the purchase unit of measure for purchase orders).
This was an issue especially when having different uom with supplier info lines setting degressive prices. The price should be computed based on selected uom and not the product uom.

bzr revid: mat@openerp.com-20140211145703-9uut4hw9aqh7326o

bzr revid: chm@openerp.com-20131209163254-k9dwxw48rcgz1hbs

bzr revid: fp@tinyerp.com-20131209142203-20l555dfdyvb60xe

[IMP] Huge speed improvement in price computation on products: 162 to 39 queries to render /shop with 28 products. O(n)->O(1)

bzr revid: fp@tinyerp.com-20131206221809-x1muf0wonl4ated0

      
      As of v7 search views will replace the value of any `self`
      literal in a @context attribute by the name of the
      record, whereas it used to be its ID.
      This means that the `Pricelist` filter used to display
      the product list with a specific pricelist would not
      work anymore.
      
      The fix requires a rather hackish name_search()
      override for product.pricelist because the display
      name of pricelists includes their currency, while
      that could be a valid name for a pricelist too.
      
      To avoid side-effects the name_search() override
      only picks up the special case used by the
      product.product._product_price() method when it
      tries to apply the context pricelist, that is
      with operator explicitly set to `=` and no extra
      domain `args`.

lp bug: https://launchpad.net/bugs/1178835 fixed

bzr revid: odo@openerp.com-20130906155047-7dmozy2jpe1ca1p2

bzr revid: amb@tinyerp.com-20130712073654-1fowt1xojgx0pjdc

bzr revid: amb@tinyerp.com-20130529135734-62rvtw3yocxvsmq1

[FIX] product: if 'date' is passed as False in context of price_get_multi(), it should be set to current date and not False (Maintenance Case: 592247)

lp bug: https://launchpad.net/bugs/1175983 fixed

bzr revid: rgo@tinyerp.com-20130517063145-va41paqq3pw38x51

bzr revid: vmt@openerp.com-20130415102349-vgcrfok2k5y10cwz

bzr revid: jco@openerp.com-20130321143459-qqain0zq8jgdhbbp

lp bug: https://launchpad.net/bugs/1155624 fixed

bzr revid: yannick.vaucher@camptocamp.com-20130315142403-gz7fy7etwzls96rt

Default value for 'Based on' in pricelist items should be 'Public Price'.

bzr revid: psa@tinyerp.com-20121214072411-3knexu4ppkq611ca

bzr revid: vmt@openerp.com-20121206145632-0h1coh5aaem65wsy

bzr revid: vba@tinyerp.com-20121023130242-pu2o7e9x7lpr7g36

bzr revid: shp@tinyerp.com-20121009063814-qm2kh936zfssojck

bzr revid: mdi@tinyerp.com-20120925114822-ahjtslxh1g0inypw

bzr revid: mdi@tinyerp.com-20120925101850-q9soju7mvol43eyo

bzr revid: mdi@tinyerp.com-20120925100457-o1yw9k2opljaz4m6

bzr revid: mdi@tinyerp.com-20120925072701-6nus286naxzujp1e

bzr revid: mdi@tinyerp.com-20120925071137-dchr17sj1nzxginy

bzr revid: mdi@tinyerp.com-20120925065619-g2n8h78ioou3q7ch

bzr revid: mdi@tinyerp.com-20120924130043-euwxbfmk5q58vqw4