Experimental pre-release PRX4

This pre-release of blogify-core includes:

Additions

• Static content
  • Users can now have profile picture
• Markdown formatting
  • Article content can now be formatted
• Persistence of user login
• Endpoint for getting articles for user by username
  • /api/articles/forUser/{username} returns articles created by username
• Endpoint for getting user by username
  • /api/users/byUsername/{username} returns user with username: username
• Logout is now a thing

Improvements

• Major UI Improvements
• Code improvements
• User authentication works properly

Removals

• Endpoint for create user (POST /api/users) is removed. Use register (POST /api/auth/register) instead