Implemented welcome message tweaks

i think the welcome message, the private dm thing, when new account signup is weak. i like how it's simple but i was also hoping to get a direct link to the "introduce yourself" forum. also, maybe even link or add details about posts stuff. like how you cant download anyhting without specific amount of posts. maybe just add another link to the other forums with all the rules.

everything was solid. good onboarding experience but just a few tweaks and it would be perfect.