Fixed the link to the mail list

- added redirect via hpr_hub .htaccess file
- added links to mastodon, matrix, and mumble

Removed contact and stuff you need to know pages as these are now in the about page

site.cfg

@@ -68,9 +68,9 @@ navigation: navigation-about.tpl.html
 content: content-correspondents.tpl.html
 filename: correspondents/index.html
 
-[contact]
-navigation: navigation-about.tpl.html
-content: content-contact.tpl.html
+# [contact]
+# navigation: navigation-about.tpl.html
+# content: content-contact.tpl.html
 
 [correspondent]
 navigation: navigation-about.tpl.html
@@ -120,9 +120,9 @@ content: content-help_out.tpl.html
 navigation: navigation-get-shows.tpl.html
 content: content-download.tpl.html
 
-[stuff_you_need_to_know]
-navigation: navigation-give-shows.tpl.html
-content: content-stuff_you_need_to_know.tpl.html
+# [stuff_you_need_to_know]
+# navigation: navigation-give-shows.tpl.html
+# content: content-stuff_you_need_to_know.tpl.html
 
 [theme]
 navigation: navigation-give-shows.tpl.html