[REM] models: remove the magic methods signal_XXX()
[FIX] signal_XXX -> signal_workflow: forgot quotes around signal name
[FIX] unsafe listification of weakref in Python < 2.7.4

Fixes #966

* As a preallocation optimization, ``list()`` calls ``__len__`` on its
  parameter if it's available
* Before Python 2.7.4, WeakSet has a bug[0] where ``len()`` is unsafe: it is
  done by iteration and weakrefs may be removed from the underlying set during
  the iteration

As a result, the safety feature of listifying a WeakSet to ensure we have
strong refs on all items during iteration may blow up.

Wrapping the weakset in a ``iter()`` makes ``__len__()`` invisible and ensures
we're within the IterationGuard[1].

Which now that I think about it means we *should* be able to safely iterate
weaksets in the first place and may not have needed to listify them...

[0] http://bugs.python.org/issue14159
[1] http://hg.python.org/cpython/file/b6acfbe2bdbe/Lib/_weakrefset.py#l58
[REM] unecessary calls to list()

* Either further operations don't really care (e.g. ``str.join`` takes any
  iterable)
* Or they do their own seq (``browse`` calls ``tuple()`` on iterable params)
[FIX]menu bar: clean up css and few cosmetics
[I18N] base: fix Hungarian translations

(Manual rebase of #956, pending update in Launchpad translations)
Merge pull request #972 from odoo-dev/8.0-menubar-cosmetics-csn

[FIX]menu bar: clean up css and few cosmetics
[FIX] account: typo in get_fiscal_position()

Fixes #971:

File "/Users/keje/src/odoo/addons/account/partner.py", line 107, in get_fiscal_position
    return part.property_account_position.id
NameError: global name 'part' is not defined
Merge pull request #964 from odoo-dev/8.0-remove-getattr-rco

[REM] models: remove the magic methods signal_XXX()
[REL] 8.0 RC1
[FIX] data-dir management

- sessions are now shared between series.
- use site data dir instead of user data dir if user has no home dir.
- in http and module handling, `data-dir` was used before being
initialized, using the default value instead of user input

(fixes #308, #904)
Merge pull request #969 from xmo-odoo/8.0-fix-weakset-listification-xmo

Unsafe listification of weakref in Python < 2.7.4
Merge pull request #970 from xmo-odoo/8.0-remove-unnecessary-listifications-xmo

Remove redundant calls to list()