[FIX] fields.py: Many2one fields only put valid values in cache
[FIX] web: m2o search facet do no set `default_*` context key for "name_search" values
[FIX] fields.py: in many2one convert_to_cache, value can be int but long as well
[FIX] translate: lang detection fallback actually falls back

For instance, when a context was passed to a method, but no lang was defined in the context, it did not tried to fallback to other places where we could have find the user language.
[FIX] account: floating point comparisons in get_reconciliation_proposition
[FIX] enable --debug for non-xmlrpc contexts

fixes #3102
[IMP] account: account.statement.operation.template model
- better many2one ondelete strategies
- domain set on fields, not views
- added domain on analytic_account_id field
[FIX] Customers remove action domain customer=1 use the context default.

Closes #3902
[IMP] res: partner form replace widget selection by option no_create
[ADD] doc: debug flag
[IMP] wording and ordering of documentation index
[FIX] web: use mutex to wait for onchanges

This fix is related to c12a2e1d1650d308e39cc2b396a76eed579e2595

Mutex allow to wait sequentially for mutex
Besides, if one of the onchanges deferreds fails, it does not resolve the mutex until all deferreds of the mutex are resolved.

Besides, we now wait for the onchanges mutex between each field commited value (line 596) in case the commited value leaded to a new onchanges, that we should wait for before commiting the rest of the values.
[FIX] remove filter for new leads/opportunity (crm)

requested by fp. the filter is wrong and not very useful from a
functional viewpoint.
[FIX] base: QWeb monetary field rounding

QWeb monetary widget uses the precision of the currency to know the number of
digits to display on a price. The number of digits is based on log10(rounding).
For currency with rounding different than 10^x (e.g. in Switzerland 0.05
to allow 5 cents coins only), the number of displayed digits should be rounded
up. e.g. log10(0.05) is -1.3, rounded up to 2 digits.

Fixes #3233
[FIX] ir_ui_view: Missing separator in search view
[IMP] [FIX] website_blog: better follow mechanism. Now people following
a blog will receive notifications only for published posts. They
will not receive all comments of all posts anymore.
When commenting a post users will receive the answers.

Added tests to try to test this behavior.
[IMP] product: usability improvement in pricelist

Explicitly specifiy that quantities are in product uom
[FIX] Packaging: allow publishing releases in --no-testing
[IMP] Packaging: Debian: sign packages with gpg key
[FIX] Packaging: better filename handling

Allow to
1) avoid a special case for debian packages in _publish function
2) publish debian packages with correct filename (ie keeping _amd64, _all)