Fix TrueZip region stores.

I think. Someone tell me if this breaks their setup with truezip, but
it works for me now and didn't before. I'm assuming people using .zip
just used the normal zip store anyway.

(cherry picked from commit dcfb769d96)

worldedit-core/src/main/java/com/sk89q/worldedit/world/storage/TrueZipMcRegionChunkStore.java

@@ -93,11 +93,11 @@ public class TrueZipMcRegionChunkStore extends McRegionChunkStore {
         } else {
             Pattern pattern = Pattern.compile(".*\\.mc[ra]$");
             // World pattern
-            Pattern worldPattern = Pattern.compile(worldName + "\\$");
+            Pattern worldPattern = Pattern.compile(worldName + "[\\\\/].*");
             for (Enumeration<? extends ZipEntry> e = zip.entries(); e.hasMoreElements(); ) {
                 ZipEntry testEntry = e.nextElement();
                 // Check for world
-                if (worldPattern.matcher(worldName).matches()) {
+                if (worldPattern.matcher(testEntry.getName()).matches()) {
                     // Check for file
                     if (pattern.matcher(testEntry.getName()).matches()) {
                         folder = testEntry.getName().substring(0, testEntry.getName().lastIndexOf('/'));