Fix some issues

Author: Golfing7

.checkstyle/checkstyle.xml

@@ -37,14 +37,6 @@
         <!-- https://checkstyle.org/config_imports.html#AvoidStarImport -->
         <module name="AvoidStarImport"/>
 
-        <!-- https://checkstyle.org/config_misc.html#AvoidEscapedUnicodeCharacters -->
-        <module name="AvoidEscapedUnicodeCharacters">
-            <property name="allowByTailComment" value="true"/>
-            <property name="allowEscapesForControlCharacters" value="true"/>
-            <property name="allowNonPrintableEscapes" value="true"/>
-            <property name="severity" value="info"/>
-        </module>
-
         <!-- https://checkstyle.org/config_misc.html#CommentsIndentation -->
         <module name="CommentsIndentation"/>
 

Essentials/src/main/java/com/earth2me/essentials/MetaItemStack.java

@@ -11,6 +11,7 @@
 import com.google.common.base.Joiner;
 import net.ess3.api.IEssentials;
 import net.ess3.api.TranslatableException;
+import org.bukkit.Bukkit;
 import net.ess3.provider.BannerDataProvider;
 import net.ess3.provider.ItemUnbreakableProvider;
 import net.ess3.provider.PotionMetaProvider;
@@ -382,7 +383,7 @@ public void addStringMeta(final CommandSource sender, final boolean allowUnsafe,
     }
 
     private void transformItem(String key, String data){
-        PluginItemTransformer transformer = itemTransformers.get(key);
+        final PluginItemTransformer transformer = itemTransformers.get(key);
 
         //Ignore, the plugin is disabled.
         if(!transformer.getPlugin().isEnabled())

Essentials/src/main/java/com/earth2me/essentials/utils/StringUtil.java

@@ -13,7 +13,7 @@ public final class StringUtil {
     private static final Pattern INVALIDFILECHARS = Pattern.compile("[^a-z0-9-]");
     private static final Pattern STRICTINVALIDCHARS = Pattern.compile("[^a-z0-9]");
     @SuppressWarnings("CheckStyle")
-    private static final Pattern INVALIDCHARS = Pattern.compile("[^\t\n\r\u0020-\u007E\u0085\u00A0-\uD7FF\uE000-\uFFFC]");
+    private static final Pattern INVALIDCHARS = Pattern.compile("[^\t\n\r -~\u0085\u00A0-\uD7FF\uE000-\uFFFC]");
 
     private StringUtil() {
     }