Basic blog structure (fix #3)

This also intruce webtest.
This also add TimestampedModel in ideasbox models.
action parameter is not needed anymore in HTML5

when submit page is current page
No need to test on len() when using pyquery
Clearner way of testing status codes
fix settings LOGIN_URL value
Use yield_fixture for app fixture
Merge pull request #45 from ideas-box/add-blog

Basic blog structure (fix #3)
Merge master branch in services branch
add translation in page, rename parameters in setting in a more explicit way, rework test
complete i18n
correct import in serveradmin/utils.py
add test with monkeypatch on subprocess.Popen
rename service_name in active_service and add default value for service_action over POST block