Homework permission level added and new axios import for homework action.

You can now create new tasks and upload a solution (or more) for them.

Listing the tasks based by its properties and states, also counting with empty lists.

Create EditNewsForm. Add actions to handle edit events. Create reducer to swap the new and the old data.

Extract the add news form to a new file. Create deleteNews action, and connect it to the news list as a Delete button.