EGD: Add long_description, used for the longer game pitches.

evennia/contrib/gamedir_client/README.md

@@ -107,6 +107,14 @@ Required: No
 
 The URL to your game's website, if you have one.
 
+### long_description
+
+Required: No
+
+A longer, full-length description or overview of the game. 
+[Markdown](https://github.com/adam-p/markdown-here/wiki/Markdown-Cheatsheet)
+and some of the very basic HTML tags are accepted here.
+
 ### listing_contact
 
 Required: **Yes**

evennia/contrib/gamedir_client/client.py

@@ -77,6 +77,7 @@ class EvenniaGameDirClient(object):
             'game_name': settings.SERVERNAME,
             'game_status': gd_config['game_status'],
             'game_website': gd_config.get('game_website') or '',
+            'long_description': gd_config.get('long_description') or '',
             'listing_contact': gd_config['listing_contact'],
 
             # How to play