First implementation of scoreboards.

Boards can be toggled with /f sb. Toggles are persistent in a yml file.
Also fix some small spelling and format things that were really bugging me.

src/main/java/com/massivecraft/factions/cmd/CmdSB.java

@@ -0,0 +1,91 @@
+package com.massivecraft.factions.cmd;
+
+import com.massivecraft.factions.FPlayer;
+import com.massivecraft.factions.P;
+import com.massivecraft.factions.struct.Permission;
+import com.massivecraft.factions.zcore.util.TL;
+import org.bukkit.configuration.file.YamlConfiguration;
+import org.bukkit.entity.Player;
+
+import java.io.File;
+import java.io.IOException;
+import java.util.UUID;
+
+public class CmdSB extends FCommand {
+
+    private YamlConfiguration settings;
+    private File file;
+
+    public CmdSB() {
+        this.aliases.add("sb");
+        this.permission = Permission.SCOREBOARD.node;
+        this.senderMustBePlayer = true;
+        // Hope I didn't miss anything.
+
+        file = new File(P.p.getDataFolder(), "playerBoardToggle.yml");
+        if (!file.exists()) {
+            try {
+                file.createNewFile();
+            } catch (IOException e) {
+                e.printStackTrace();
+            }
+        }
+
+        settings = YamlConfiguration.loadConfiguration(file);
+    }
+
+    @Override
+    public void perform() {
+        boolean toggle = toggle(me.getPlayer().getUniqueId());
+        me.sendMessage(TL.TOGGLE_SB.toString().replace("{value}", String.valueOf(toggle)));
+    }
+
+    /**
+     * Toggle a player seeing scoreboards or not.
+     *
+     * @param uuid - uuid of player.
+     *
+     * @return - true if now set to seeing scoreboards, otherwise false.
+     */
+    public boolean toggle(UUID uuid) {
+        if (settings.getStringList("off").contains(uuid.toString())) {
+            settings.getStringList("off").remove(uuid.toString());
+            save();
+            return true;
+        } else {
+            settings.getStringList("off").add(uuid.toString());
+            save();
+            return false;
+        }
+    }
+
+    public void save() {
+        try {
+            settings.save(file);
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+    }
+
+    /**
+     * Determines whether or not to show the player a scoreboard.
+     *
+     * @param player - FPlayer in question.
+     *
+     * @return - true if should show, otherwise false.
+     */
+    public boolean showBoard(FPlayer player) {
+        return showBoard(player.getPlayer());
+    }
+
+    /**
+     * Determines whether or not to show the player a scoreboard.
+     *
+     * @param player - Player in question.
+     *
+     * @return - true if should show, otherwise false.
+     */
+    public boolean showBoard(Player player) {
+        return !settings.getStringList("off").contains(player.getUniqueId().toString());
+    }
+}