WonderTrade Forge

Changes: > Adds (optional) FPAPI placeholder support to most GUI buttons > Adds (optional> FPAPI placeholder support to webhooks > Adds the following placeholders to webhooks (where the non-prefixed placeholders refer to the "given", i.e. added to the WT, pokemon) - %evs%, %received_evs%, %given_evs% - %ivs%, %received_ivs%, %given_ivs% - %nature%, %received_nature%, %given_nature% - %growth%, %received_growth%, %given_growth% - %species_lower%, %received_species_lower%, %given_species_lower%