[IMP] project & its related module with removing of mx.datetime dependancy

addons/project/board_project_manager_view.xml

addons/project/project.py

addons/project/project_data.xml

addons/project_gtd/project_gtd.py

addons/project_gtd/wizard/project_gtd_empty.py

addons/project_issue/__init__.py

addons/project_issue/__openerp__.py

addons/project_issue/project_issue.py

addons/project_issue/report/project_issue_report.py

addons/project_issue/security/project_issue_security.xml

addons/project_issue_sheet/__init__.py

addons/project_issue_sheet/__openerp__.py

addons/project_long_term/__openerp__.py

addons/project_long_term/project_long_term.py

addons/project_long_term/project_long_term_view.xml

addons/project_long_term/project_long_term_wizard.xml

addons/project_long_term/wizard/project_compute_tasks.py

addons/project_long_term/wizard/project_schedule_tasks.py

addons/project_long_term/wizard/working_calendar.py

addons/project_messages/__openerp__.py