The bug was not exposed by the original test, since it was mixing two (related) aspects:
* An invalid Id (a badly formed mongodb identifier)
* An non-existent Id (an identifier with no corresponding document in the database)
Modifications:
- Fixed the message property in the article controller (the error message follows the wording of the error message in "users.password.server.controller.js", in case of username not found)
- Added a new test to check modifications and avoid regressions
A state parameter was added for the routes that require user authentication. Now, everytime a statechange occurs, the destination state is checked and user is redirected to signin page if necessary. Note the state parameter is added within `data`, so that nested states can inherent its value.
The executable bit is set for a lot of files where it is not necessary
to have the executable bit set. This PR removes the executable bit from
those files.
