improved homepage, added messages view etc.
// TODO fix urls.
// Actually is for instance:
// http://localhost:8080/welcome#profile
// should be: http://localhost:8080/profile
updated user profile
Expanded Offer class
Basic offer list and offer display
Merge branch 'feature/offer-posts' of https://github.com/Desmond14/agh-networking-platform into feature/offer-posts