Percy's Locator Kit

Changes:

• Adjusted some feedback messages
• Moved all feedback messages from the action bar to the chat
• The triggers PLKColorHex and PLKStyle now provide feedback when they fail

Known issue:

• When triggering PLKColorHex and using a 3-digit hex code (e.g. "0F0"), the feedback message in chat will show an incorrect colour. The waypoint itself is updated to the correct colour. Using a 6-digit hex code works fine. This appears to be a Minecraft issue.