Rebase & squash all scoreboard commits
Use "Scoreboard" instead of "Scoreboards" in config to avoid breaking it

The updater was derping and unindenting "Display_Time", so we need to rename the top-level node.
Fix the readRank() access in ExperienceAPI
Make all enable/show methods consistent
Add ability cooldowns to the scoreboard
Add level-up skill board, misc fixes
Use String.equals() not ==