enable relabelling blocks across categories

blocks.js

@@ -2268,6 +2268,7 @@ BlockMorph.prototype.relabel = function (alternativeSelectors) {
         menu.addItem(
             block,
             function () {
+                myself.setCategory(SpriteMorph.prototype.blocks[sel].category);
                 myself.setSelector(sel);
             }
         );

history.txt

@@ -2163,3 +2163,4 @@ ______
 * Objects: add hide and show blocks to the stage’s “looks” category
 * Objects: added more relabelling options to SAY and THINK variants
 * Blocks, objects: enable relabelling blocks with C-Slots
+* Blocks: enable relabelling blocks across categories