3.6 - Posts

• Create a post in a specific community
• Create a post with an image in a specific community
• Display posts for the current community
• Return user to previous page after successfully creating a post
• Display newly created post in the community page
• Loading animation when loading posts
• Delete post if the post was created by the currently logged in usear
• Show community image in the header in the community page
• About component can add, change or remove community image if the user is an admin
• Navbar always visible while scrolling
• Vote on posts (like or dislike) if the user is signed in
• Fetch posts votes
• Other general improvements and bug fixes