Muti buttons spawning

On a ungraceful shutdown (eg. server crash) the buttons are not despawned at the oil rigs. 

so when the server restarts, the plugin spawns another button in the same place, making it sometimes not work, without ent killing the old buttons

morning Elf . yes i have seen this before .... i think ill add a safety net to check old props on startup and delete before spawn ....... 

Changed Status from Pending to Work in Progress