[IMP] Improve field tooltips in account,email_template,mail,mrp,project,sale_stock,product,etc...
[IMP] Improve filter tooltips in account,account_voucher,crm,hr,hr_recruitment,mail,membership,mrp,point_of_sale,purchase,sale
[IMP] Improve existing field and filter tooltips.
tested local install with saas5 version

- added a missing dependency (qrcode)
- url for local test with port 8069
- check if pip2 needs to be used
Merge pull request #492 from nseinlet/patch-1

tested local install with saas5 version
[FIX] README: correct build status image URL.
Merge branch 'master' of https://github.com/odoo/odoo
Merge branch 'master-revise-all-tooltips-pdi' of https://github.com/odoo-dev/odoo

Conflicts:
	addons/mrp/mrp.py
	addons/sale_crm/sale_crm.py
	addons/stock/product.py
Merge branch 'master' of github.com:jhg/odoo