[IMP] product: remove UoM constraint from product module and give it in stock and account module

Closes #2440
[IMP] Website name instead of company name in title and logo
[IMP] mrp: hide some fields on BOM, add groups to handle the displayed fields
[FIX] website: fallback on company name for non-website templates
[FIX] Use website's `domain` field for multi-website

This commit is related to d51157154e478d1fafdd5b7861346535baeed6d2
[IMP] [MOV] account_analytic_analysis, hr_timesheet
- move the service product from product to hr_timesheet
- move default time unit for services from sale to account_analytic_analysis
to ease the configuration
[ADD] website: new table format snippet

(cherry-picked from 383ab454725d9bf8d01392a587c8a2c0c2116294)
(Closes #2429)
[FIX] Update README for master
[IMP] l10n_pl: some corrections in Polish CoA

PLN as default currency
Many improvements in taxes and fiscal positions
Fixes #825
[ADD] web_pdf_viewer: PDF in-browser preview

This module extends web client and reporting tool in order to allow a
preview of PDF files directly in the browser (if supported by the
browser). If you disable it, standard file download stays available.
[FIX] google_calendar: browse user as SUPERUSER_ID to be able to write/update google_calendar info on user
[FIX] web_tip: scroll if needed prior to displaying a tip
[IMP] sale,purchase: allow invoicing

(closes #500)

(cherry picked from commit 84c0595aef3a417702c81b5226ae1f61817a2bf8)
[FIX] sale: move menu to avoid error at install of website_quote

(closes #2728)
(cherry picked from commit 2b1e1e70dd537f02f776e58c9def195ecff839c5)
[IMP] crm: phonecall: logged calls tooltip
[IMP] survey: delete label change / fix
[FIX] web_tip: handles `content changed` event in forms; minor fixes

* eval tip on form content changes
* prevent multiple tip trigerring in some cases
* use scrollTo jquery plugin
[ADD] website: new blog demo snippets

(cherry picked from commit 6c6df546eb5a99d00d62fc6b497b4b861431423e)
(closes #2631)
[IMP] base_action_rule: allow using the CharDomain widget
to set the filter and pre-update filter. Using ir.filters is still
possible, but is not the only way anymore of setting the domains
used in the base action rules.
[IMP] crm, project, hr_recruitment: star (priority) management: less possible values, too much stars are too much tears !