Mysidia bug fixes and rewrite: Would anyone be interested?

[Dinocanid]

I already updated mysidia deluxe to support PHP 7 actually :U
All it really took was some renaming to avoid conflicts.

Rebuilding from the ground up would be better in a way (since, well, it's a brand new framework lol), but I wouldn't really be able to help with that since I'm not knowledgeable enough in "plain" PHP to create a framework from scratch, just to modernize what's already there.

There's a branch on the github that added composer to load important files, although I haven't been able to test it since for whatever reason composer refuses to install on my PC. If someone was able to test and see that the feature works though, that would be great.