Inserting a dead tool button to get ones after Text and Label to line up nice.

Improved Label tool icon.
Improved Label tool "Select mode" button icon.

src/tools.h

@@ -41,6 +41,7 @@ enum
   TOOL_SHAPES,
   TOOL_TEXT,
   TOOL_LABEL,
+  TOOL_NA,
   TOOL_MAGIC,
   TOOL_UNDO,
   TOOL_REDO,
@@ -75,6 +76,9 @@ const char *const tool_names[NUM_TOOLS] = {
   // Label tool
   gettext_noop("Label"),
 
+  // Reserved...
+  gettext_noop(""),
+
   // "Magic" effects tools (blur, flip image, etc.)
   gettext_noop("Magic"),
 
@@ -125,6 +129,9 @@ const char *const tool_tips[NUM_TOOLS] = {
   // Label tool instructions
   gettext_noop("Choose a style of text. Click on your drawing and you can start typing. Press [Enter] or [Tab] to complete the text. By using the selector button and clicking an exist label, you can move it, edit it and change its text style."),
 
+  // Reserved...
+  gettext_noop(""),
+
   // Magic tool instruction
   gettext_noop("Pick a magical effect to use on your drawing!"),
 
@@ -175,6 +182,7 @@ const char *const tool_img_fnames[NUM_TOOLS] = {
   DATA_PREFIX "images/tools/shapes.png",
   DATA_PREFIX "images/tools/text.png",
   DATA_PREFIX "images/tools/label.png",
+  DATA_PREFIX "images/ui/dead40x40.png",
   DATA_PREFIX "images/tools/magic.png",
   DATA_PREFIX "images/tools/undo.png",
   DATA_PREFIX "images/tools/redo.png",
@@ -197,6 +205,7 @@ const int tool_tux[NUM_TOOLS] = {
   TUX_DEFAULT,
   TUX_DEFAULT,
   TUX_DEFAULT,
+  TUX_DEFAULT,
   TUX_OOPS,
   TUX_WAIT,
   TUX_DEFAULT,

src/tuxpaint.c

@@ -10889,6 +10889,11 @@ static void reset_avail_tools(void)
     tool_avail[TOOL_LABEL] = 0;
 
 
+  /* TBD... */
+
+  tool_avail[TOOL_NA] = 0;
+
+
   /* Disable save? */
 
   if (disable_save)