Adding nameplate trait to allow custom npc tag colors

Usage: /npc nameplate --color <color>

Important fix: Dependencies were loaded before any other plugin was
loaded. This lead to a double-check inside commands. Dependencies (like
Economy, Permissions,…) are now loaded inside the onEnable() function.
This allows us to use the dependency class in the comannds, instead of
checking for the requried plugin all over again.
Use dependency class in GIVE, TAKE command for MONEY