The charselect's "shadows" correctly update based on what chars are taken.

This was purely a graphical bug. The characters were correctly
recognised as taken by the client, but there was no way to update the
"taken-shadow" over their icons.
Which meant that they were locked into the way they were when the user
first joined the server.

As a result of this, a `CharsCheck` package from the server will
correctly display the taken characters to the client in the character
selection.

aocharbutton.cpp

@@ -40,13 +40,22 @@ void AOCharButton::reset()
   ui_selector->hide();
 }
 
-void AOCharButton::set_taken()
+void AOCharButton::set_taken(bool is_taken)
+{
+  taken = is_taken;
+}
+
+void AOCharButton::apply_taken_image()
 {
   if (taken)
   {
     ui_taken->move(0,0);
     ui_taken->show();
   }
+  else
+  {
+    ui_taken->hide();
+  }
 }
 
 void AOCharButton::set_passworded()

aocharbutton.h

@@ -20,9 +20,11 @@ public:
 
   void refresh();
   void reset();
-  void set_taken();
+  void set_taken(bool is_taken);
   void set_passworded();
 
+  void apply_taken_image();
+
   void set_image(QString p_character);
 
 private:

charselect.cpp

@@ -168,8 +168,7 @@ void Courtroom::put_button_in_place(int starting, int chars_on_this_page)
 
       ui_char_button_list_filtered.at(n)->move(x_pos, y_pos);
       ui_char_button_list_filtered.at(n)->show();
-
-      ui_char_button_list_filtered.at(n)->set_taken();
+      ui_char_button_list_filtered.at(n)->apply_taken_image();
 
       ++x_mod_count;
 
@@ -240,6 +239,12 @@ void Courtroom::filter_character_list()
       if (!char_list.at(i).name.contains(ui_char_search->text(), Qt::CaseInsensitive))
           continue;
 
+      // We only really need to update the fact that a character is taken
+      // for the buttons that actually appear.
+      // You'd also update the passwordedness and etc. here later.
+      current_char->reset();
+      current_char->set_taken(char_list.at(i).taken);
+
       ui_char_button_list_filtered.append(current_char);
     }