Huge refactoring

[imDaniX]

I decided to refactor a whole project.

1. Made it more consistent with java naming guidelines.
2. Removed unnecessary static utility classes.
3. Used private modifier where possible.
4. Moved classes to more logical places/packages.

Also some tweaks here and there. All of that was done for easier plugin maintaining in the future. You also forgot to specify dynmap api scope - that was the reason why jar file was so huge.

[WiIIiam278]

Thank you for this! It's a big improvement all around, fixes my lazy code.
Only issue I noticed was that you forgot to register setwarp and sethome, but I will merge this and correct that.
Data manager will probably want further refactoring down the road to allow database work to be done async as per #1, but this will really help with doing that a little down the road.