Contacts updated (#19)

* preparing for gsoc2022

* ideas page updated

* chat updated to libera chat

Author: ReimarBauer

docs/05_help.md

@@ -34,7 +34,7 @@ This video shows the kml docking widget and some of its options.
 
 ## Contact US
 
-IRC: <https://webchat.freenode.net/?channels=mss-dev> (This channel is synced to our slack channel)
+IRC: <https://web.libera.chat/?nick=Guest&#mss> (This channel is synced to our slack channel)
 
 Slack: [https://mss-devel.slack.com](https://mss-devel.slack.com) (invitation on request by email)
 

docs/_includes/social.html

@@ -11,7 +11,6 @@
   {%- if site.youtube_username -%}<li><a href="https://youtube.com/{{ site.youtube_username| cgi_escape | escape }}"><svg class="svg-icon"><use xlink:href="{{ '/assets/minima-social-icons.svg#youtube' | relative_url }}"></use></svg> <span class="username">{{ site.youtube_username| escape }}</span></a></li>{%- endif -%}
   {%- if site.googleplus_username -%}<li><a href="https://plus.google.com/{{ site.googleplus_username| escape }}"><svg class="svg-icon"><use xlink:href="{{ '/assets/minima-social-icons.svg#googleplus' | relative_url }}"></use></svg> <span class="username">{{ site.googleplus_username| escape }}</span></a></li>{%- endif -%}
   {%- if site.rss -%}<li><a href="{{ 'feed.xml' | relative_url }}"><svg class="svg-icon"><use xlink:href="{{ '/assets/minima-social-icons.svg#rss' | relative_url }}"></use></svg> <span>{{ site.rss | escape }}</span></a></li>{%- endif -%}
-  <li><a href="https://webchat.freenode.net/?channels=#mss-dev"><span class="svg-icon">{% include irc.svg %}</span><span class="username">&nbsp;&nbsp;#mss-dev</span></a></li>
+  <li><a href="https://web.libera.chat/?nick=Guest&#mss"><span class="svg-icon">{% include irc.svg %}</span><span class="username">&nbsp;&nbsp;#mss-dev</span></a></li>
   <li><a href="https://mss.readthedocs.io/en/stable/"><span class="svg-icon">{% include rtfd.svg %}</span><span class="username">&nbsp;&nbsp;mss.rtfd.io</span></a></li>
-
 </ul>

docs/develop/contact.md

@@ -5,7 +5,7 @@ permalink: /develop/contact
 exclude: true
 ---
 
-IRC: <https://webchat.freenode.net/?channels=mss-dev> (This channel is synced to our slack channel)
+IRC: <https://web.libera.chat/?nick=Guest&#mss> (This channel is synced to our slack channel)
 
 Slack: [https://mss-devel.slack.com](https://mss-devel.slack.com) (invitation on request by email)