Make belgian chart of accounts multilingual

This allows it to be translated into Flemish.
The code is based on the code for l10n_ch.
Note that the post install hook 'l10n_be_wizard.yml' has
been replaced with a python hook in 'wizard/account_wizard.py'.
This was done because the yml based hook runs before the
actual translations are loaded and hence fails to
properly translate the chart of accounts.

Lastly, a first, incomplete translation has been included.
Complete translation for chart of accounts, fiscal position, account tax
Merge current ~openerp/openobject-addons/7.0/
[FIX] bug 1183741 project name_search does not look on name and does not support different id between project and a.a.
[FIX] indentation
[FIX] forward context
[FIX] bug 1183741 project name_search does not look on name and does not support different id between project and a.a.
[FIX] #1067541 bill task work selects wrong receivable account in multi-company context
Cleaning of the initial code to take into account code moved since the original proposed patch (lp:~openerp-community-testers/openobject-addons/trunk-bug1067541)
[FIX] #1067541 bill task work selects wrong receivable account in multi-company context
Cleaning of the initial code to take into account code moved since the original proposed patch (lp:~openerp-community-testers/openobject-addons/trunk-bug1067541)
check for a valid partner_id on the analytic account before trying to access its attributes
Check for a valid partner_id on the analytic account before trying to access its attributes
Launchpad automatic translations update.
Launchpad automatic translations update.
[FIX] account: pass context to move line reconciliation creation (opw #594546)
[FIX] account: pass context to move line reconciliation creation (opw #594546)
Launchpad automatic translations update.
Launchpad automatic translations update.
[FIX] account_report_company: avoid including the address in the computed display name
[IMP] l10n_multilang: add translation_folder field
[FIX] correctly place blocks