Version 1.12.18

Removed "Pot of Gold" message
Added check to prevent more than one query thread per client
Added a check to prevent queries running for clients with immunity
Changed query handing to query as long as the player is in the default
cooldown
Debug improvements to EasyHTTP and Helper_GetAdStatus_Complete
Fixed an issue that could happen if the plugin received no data from a
query
Improved some debug messages
Changed the backend interface to expect data in JSON
- Added json.inc
Fixed the html page remaining loaded after the panel is closed.