Revert "Updated: Bukkit 1.7.9-R0.3-SNAPSHOT (read note)"

This reverts commit ab2159aaf1704534c9fe5dfff07184ca1429e0a7. This reverts the change to getOnlinePlayers returning a
collection, which enables support on Glowstone (hopefully).

Conflicts:
	modules/RoyalCommands/src/main/java/org/royaldev/royalcommands/rcommands/CmdKillAll.java
	modules/RoyalCommands/src/main/java/org/royaldev/royalcommands/rcommands/CmdList.java
	modules/RoyalCommands/src/main/java/org/royaldev/royalcommands/rcommands/CmdMuteAll.java
	modules/RoyalCommands/src/main/java/org/royaldev/royalcommands/rcommands/CmdReply.java