fixed a flat-mode glitch, updated Portuguese translation

thanks, Bernat for reporting the bug and Manuel for the translation
update!

blocks.js

@@ -149,7 +149,7 @@ isSnapObject, copy, PushButtonMorph, SpriteIconMorph, Process*/
 
 // Global stuff ////////////////////////////////////////////////////////
 
-modules.blocks = '2016-October-27';
+modules.blocks = '2016-October-31';
 
 var SyntaxElementMorph;
 var BlockMorph;
@@ -8818,7 +8818,7 @@ SymbolMorph.prototype.setLabelColor = function (
     shadowColor,
     shadowOffset
 ) {
-    this.shadowOffset = shadowOffset;
+    this.shadowOffset = shadowOffset || new Point();
     this.shadowColor = shadowColor;
     this.setColor(textColor);
 };

gui.js

@@ -72,7 +72,7 @@ isRetinaSupported, SliderMorph*/
 
 // Global stuff ////////////////////////////////////////////////////////
 
-modules.gui = '2016-October-27';
+modules.gui = '2016-October-31';
 
 // Declarations
 
@@ -3049,7 +3049,7 @@ IDE_Morph.prototype.aboutSnap = function () {
         module, btn1, btn2, btn3, btn4, licenseBtn, translatorsBtn,
         world = this.world();
 
-    aboutTxt = 'Snap! 4.0.9\nBuild Your Own Blocks\n\n'
+    aboutTxt = 'Snap! 4.0.9.1\nBuild Your Own Blocks\n\n'
         + 'Copyright \u24B8 2016 Jens M\u00F6nig and '
         + 'Brian Harvey\n'
         + 'jens@moenig.org, bh@cs.berkeley.edu\n\n'

locale.js

@@ -42,7 +42,7 @@
 
 /*global modules, contains*/
 
-modules.locale = '2016-October-27';
+modules.locale = '2016-October-31';
 
 // Global stuff