Various minor fixes

Fix drain
Fix some messages lacking prefix
Fix non persistent brushes

favs/src/main/java/com/thevoxelbox/voxelsniper/util/VoxelList.java

@@ -33,7 +33,6 @@ public class VoxelList
 
     public void add(BlockMask mask)
     {
-
         this.mask = (BlockMask) mask.and(mask);
     }
 

worldedit-core/src/main/java/com/sk89q/worldedit/EditSession.java

@@ -2018,7 +2018,7 @@ public class EditSession extends AbstractDelegateExtent implements HasFaweQueue,
         MaskIntersection mask = new MaskIntersection(
                 new BoundedHeightMask(0, Math.min(origin.getBlockY(), getMaximumPoint().getBlockY())),
                 new RegionMask(new EllipsoidRegion(null, origin, new Vector(radius, radius, radius))),
-                liquidMask, new BlockTypeMask(this, BlockTypes.AIR, BlockTypes.CAVE_AIR, BlockTypes.VOID_AIR));
+                liquidMask);
 
         BlockReplace replace = new BlockReplace(this, BlockTypes.AIR.getDefaultState());
         NonRisingVisitor visitor = new NonRisingVisitor(mask, replace, (int) (radius * 2 + 1), this);

worldedit-core/src/main/java/com/sk89q/worldedit/LocalSession.java

@@ -1043,6 +1043,15 @@ public class LocalSession implements TextureHolder {
         } else {
             previous = this.tools[type.getInternalId()];
             this.tools[type.getInternalId()] = tool;
+            if (tool != null) {
+                hasTool = true;
+            } else {
+                hasTool = false;
+                for (Tool i : this.tools) if (i != null) {
+                    hasTool = true;
+                    break;
+                }
+            }
         }
         if (previous != null && player != null && previous instanceof BrushTool) {
             BrushTool brushTool = (BrushTool) previous;

worldedit-core/src/main/java/com/sk89q/worldedit/command/composition/ShapedBrushCommand.java

@@ -19,6 +19,7 @@
 
 package com.sk89q.worldedit.command.composition;
 
+import com.boydti.fawe.config.BBC;
 import com.sk89q.minecraft.util.commands.CommandException;
 import com.sk89q.minecraft.util.commands.CommandLocals;
 import com.sk89q.minecraft.util.commands.CommandPermissionsException;
@@ -79,7 +80,7 @@ public class ShapedBrushCommand extends SimpleCommand<Object> {
             WorldEdit.getInstance().getPlatformManager().getCommandManager().getExceptionConverter().convert(e);
         }
 
-        player.print("Set brush to " + factory);
+        player.print(BBC.getPrefix() + "Set brush to " + factory);
 
         return true;
     }

worldedit-core/src/main/java/com/sk89q/worldedit/extension/platform/CommandManager.java

@@ -476,9 +476,9 @@ public final class CommandManager {
         } catch (CommandException e) {
             String message = e.getMessage();
             if (message != null) {
-                actor.printError(e.getMessage());
+                actor.printError(BBC.getPrefix() + e.getMessage());
             } else {
-                actor.printError("An unknown FAWE error has occurred! Please see console.");
+                actor.printError(BBC.getPrefix() + "An unknown FAWE error has occurred! Please see console.");
                 log.log(Level.SEVERE, "An unknown FAWE error occurred", e);
             }
         } catch (Throwable e) {
@@ -487,7 +487,7 @@ public final class CommandManager {
             if (faweException != null) {
                 BBC.WORLDEDIT_CANCEL_REASON.send(actor, faweException.getMessage());
             } else {
-                actor.printError("There was an error handling a FAWE command: [See console]");
+                actor.printError(BBC.getPrefix() + "There was an error handling a FAWE command: [See console]");
                 actor.printRaw(e.getClass().getName() + ": " + e.getMessage());
                 log.log(Level.SEVERE, "An unexpected error occurred while handling a FAWE command", e);
             }

worldedit-core/src/main/java/com/sk89q/worldedit/function/mask/MaskIntersection.java

@@ -48,6 +48,15 @@ public class MaskIntersection extends AbstractMask {
         formArray();
     }
 
+    /**
+     * Create a new intersection.
+     *
+     * @param mask a list of masks
+     */
+    public MaskIntersection(Mask... mask) {
+        this(Arrays.asList(checkNotNull(mask)));
+    }
+
     private void formArray() {
         if (masks.isEmpty()) {
             masksArray = new Mask[]{Masks.alwaysFalse()};
@@ -123,15 +132,6 @@ public class MaskIntersection extends AbstractMask {
         return hasOptimized;
     }
 
-    /**
-     * Create a new intersection.
-     *
-     * @param mask a list of masks
-     */
-    public MaskIntersection(Mask... mask) {
-        this(Arrays.asList(checkNotNull(mask)));
-    }
-
     /**
      * Add some masks to the list.
      *