Add colored text (not only colored chat).

Add documentation, move files to a proper place and avoid memory leaks.
Make it work with most kind of texts, and allow backgrounds too.

src/chat.h

@@ -25,7 +25,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include <list>
 
 #include "irrlichttypes.h"
-#include "util/coloredstring.h"
+#include "util/enriched_string.h"
 
 // Chat console related classes
 
@@ -34,9 +34,9 @@ struct ChatLine
 	// age in seconds
 	f32 age;
 	// name of sending player, or empty if sent by server
-	std::wstring name;
+	EnrichedString name;
 	// message text
-	ColoredString text;
+	EnrichedString text;
 
 	ChatLine(std::wstring a_name, std::wstring a_text):
 		age(0.0),
@@ -44,12 +44,19 @@ struct ChatLine
 		text(a_text)
 	{
 	}
+
+	ChatLine(EnrichedString a_name, EnrichedString a_text):
+		age(0.0),
+		name(a_name),
+		text(a_text)
+	{
+	}
 };
 
 struct ChatFormattedFragment
 {
 	// text string
-	std::wstring text;
+	EnrichedString text;
 	// starting column
 	u32 column;
 	// formatting
@@ -262,7 +269,7 @@ public:
 	// Get the recent messages buffer
 	ChatBuffer& getRecentBuffer();
 	// Concatenate all recent messages
-	std::wstring getRecentChat();
+	EnrichedString getRecentChat();
 	// Get the console prompt
 	ChatPrompt& getPrompt();