Add monthly statements configurable on partners

.hgconf

NEWS.rst

README.rst

__init__.py

__manifest__.py

data/ir.sequence.xml

demo/account.monthly_statement.kind.csv

menu.xml

models/__init__.py

models/account_monthly_statement.py

models/account_monthly_statement_kind.py

models/res_partner.py

reports/__init__.py

reports/monthly_statement_excel.py

reports/reports.xml

security/ir.model.access.csv

tests/__init__.py

tests/test_account_report.py

views/account_monthly_statement.xml

views/account_monthly_statement_kind.xml