Icons, Icons for Logon and World, and new spell fixes

Just like the title says; I have fixed a the Icons for the Gossip System, they are now defined and hopefully fixes a issue.

Icons for the Logon.exe and world.exe so they are now used.

Many new spell fixes, especially spells that change your model/display.

@Jackpoz: I have reviewed all the commits and I have also compiled it and went in-game just fine. I did also test some of the spells, which they do what I expected it to do.