feat(contact): Adds GitLab for sidebar. Only display contacts that are configured.

_config.yml

@@ -28,6 +28,9 @@ url: ""
 github:
   username: github_username # change to your GitHub username
 
+gitlab:
+  username: gitlab_username # change to your GitLab username
+
 twitter:
   username: twitter_username # change to your Twitter username
 

_data/contact.yml

@@ -3,6 +3,9 @@
 - type: github
   icon: "fab fa-github"
 
+- type: gitlab
+  icon: "fab fa-gitlab"
+
 - type: twitter
   icon: "fa-brands fa-x-twitter"
 

_includes/sidebar.html

@@ -53,10 +53,14 @@
 
     {% for entry in site.data.contact %}
       {% case entry.type %}
-        {% when 'github', 'twitter' %}
-          {%- capture url -%}
-            https://{{ entry.type }}.com/{{ site[entry.type].username }}
-          {%- endcapture -%}
+        {% when 'github', 'gitlab', 'twitter' %}
+          {% if site[entry.type].username %}
+            {%- capture url -%}
+              https://{{ entry.type }}.com/{{ site[entry.type].username }}
+            {%- endcapture -%}
+          {% else %}
+            {% assign url = nil %}
+          {% endif %}
         {% when 'email' %}
           {% assign email = site.social.email | split: '@' %}
           {%- capture url -%}