[FIX] .oe_website_spinner dynamic awesomeness (flexible qty snippet)

[FIX] Better alignment for multiple spinners in a table (shopping cart)

[IMP] Removing Javascript redundancies
[FIX] Adding __init__.py that addons are detected via root and might be imported without using the virtual openerp.addons path
[IMP/REF] Enabling inheritance of product.pricelist.items via context and additional methods without the need to overwrite method _price_get_multi() completely by adding two hooks