Fix the bugs on my Vanilla Forum website, and add a few new features.

Project Description:
Vanilla Forum version : 2.0.18.4.
WANT TO FIX FOLLOWING BUGS:

double posting
posts not appearing at all on site activity and forums (sometimes have to enter a response twice or three times)
notifications appearing LATE, suddenly you get 5 notification popups at a time instead of one after another as they happen
bonk errors on user search
mobile version template not matching
"visits" and other values not reporting correctly.
admin messages stopped working
We've added things like user pages divided by boys and girls, added some stuff to the profiles, but what I really want are:

WANT TO ADD FOLLOWING FEATURES:

profile image galleries
badges
winking/poking
leaderboards (top users, top posts)
private galleries (invite a user to see your private images)
image feeds (a top level photo section where users can post photos)
Fix user search and make it more robust
import old user data from previous LAMP platform backup (100k users and forum posts/data going back to 2002)