bindings: add support for parsing/displaying insert key

src/bindings.cpp

@@ -51,6 +51,8 @@ Key stringToSpecialKey(const std::string &s)
 		result = Key(KEY_SPACE, Key::Standard);
 	else if (!s.compare("enter"))
 		result = Key(KEY_ENTER, Key::Standard);
+	else if (!s.compare("insert"))
+		result = Key(KEY_IC, Key::NCurses);
 	else if (!s.compare("delete"))
 		result = Key(KEY_DC, Key::NCurses);
 	else if (!s.compare("left"))

src/help.cpp

@@ -51,6 +51,8 @@ std::string keyToString(const Key &key, bool *print_backspace)
 		result += "Space";
 	else if (key == Key(KEY_ENTER, Key::Standard))
 		result += "Enter";
+	else if (key == Key(KEY_IC, Key::NCurses))
+		result += "Insert";
 	else if (key == Key(KEY_DC, Key::NCurses))
 		result += "Delete";
 	else if (key == Key(KEY_RIGHT, Key::NCurses))
@@ -88,8 +90,6 @@ std::string keyToString(const Key &key, bool *print_backspace)
 	return result;
 }
 
-
-
 }
 
 void Help::Init()