(cherry-picked from 383ab454725d9bf8d01392a587c8a2c0c2116294)
(Closes #2429)

- 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

This commit is related to d5115715

Closes #2440

[IMP] sale_stock: warehouse_id field on sale order is now readonly, except in draft and sent states.

- project kanban view: dashboard-like view, add sparklines for open tasks
and closed issues
- project: cleaned demo data, less stages
- project: description is now an html field

Error during forward port

[IMP] website_forum: tag creation now done only on enter, allowing to add whitespaces in tag name. More consistent behavior with odoo.

69297dbf

remove module_boot() usage

The problem was that when the user manipulates the graph view (in pivot
table mode), the graph view resetted the group by facet in the search
view.  It was not a problem unless a custom filter with a groupby was
already there, in which case, the group bys were duplicated.

The search view is now smarter, it only resets the additional groupbys
(and col_groupbys).   Also, to prevent usability problems, the graph
view disable the '+/-' groupbys added by a custom filters.

Note that this fix is only temporary: a revamp of custom filters, facets,
search view is coming in the next months. (at least, that's the idea). Right
now, too much 'search logic' is in the graph view.

Another note: this fix is somewhat fragile: it makes some assumptions
about the search query (mainly that the custom filter is the first facet,
also, that no other filters add groupbys/col_groupbys)

[FIX] website_event_sale: remove invalid code chunk introduced during previous forward-port (56f2b7ae0f6)