Added missing bootstrap file.
Don't let DjDT go on the net to fetch jquery.
Update the permissions while editing the invoice and added a test to cover that.
Added missing imports.
Fill the CC list.
Permission on the update view.
Global permissions management.
Restrict the invoice views to logged in users.
Added a test on invoice's update.
Anonymous users will be redirected to the login page.
Updates to fix the tests.
Merge remote-tracking branch 'origin/develop'