Initial work for articles
Scenario Create Articles - Success
Scenario Article Create - Failure
Create Article Unavailable
Scenario List Articles - Success
Scenario List Articles - Unavailable
Scenario View Article - Success
Some refactoring
Scenario View Article - Unavailable
Scenario Edit Article Access - Success
Scenario Edit Article - Success
Scenario Edit Article - Failure
Scenario Edit Article - Unavailable
Scenario Remove Article - Success