Add basic support for the various new text entries in the re-release

Should address most of #1709

dist/res/config/entry_types/text.cfg

@@ -485,8 +485,8 @@ misctext : text
 
 shaders : text
 {
-	name = "OpenGL Shaders";
-	match_ext = "fp", "fs", "ps", "vp";
+	name = "Shaders";
+	match_ext = "fp", "fs", "ps", "vp", "shader", "inc", "compute";
 	icon = "code";
 }
 
@@ -652,6 +652,54 @@ umapinfo : text
 	text_language = "umapinfo";
 }
 
+json : text
+{
+	name = "JSON";
+	match_ext = "json";
+	text_language = "json";
+}
+
+gameconf : text
+{
+	name = "Game Configuration";
+	match_name = "gameconf";
+	text_language = "json";
+}
+
+sbardef : text
+{
+	name = "Statusbar Definition";
+	match_name = "sbardef";
+	text_language = "json";
+}
+
+intermission : text
+{
+	name = "Interlevel Definition";
+	match_name = "xwinter0", "xwinter1";
+	text_language = "json";
+}
+
+finale : text
+{
+	name = "Finale Definition";
+	match_name = "xfinale1";
+	text_language = "json";
+}
+
+trakinfo : text
+{
+	name = "Music Track Info";
+	match_name = "trakinfo";
+	text_language = "json";
+}
+
+kfont : text
+{
+	name = "KEX Font";
+	match_ext = "kfont";
+}
+
 txt : text
 {
 	name = "Text";

dist/res/config/languages/0_base.txt

@@ -49,3 +49,17 @@ lua
 		false, true, nil
 	}
 }
+
+json
+{
+	name = "JSON";
+	comment_line = "//";
+	case_sensitive = true;
+	block_begin = "{";
+	block_end = "}";
+
+	keywords =
+	{
+		true, false, null
+	}
+}