Expand beian options for users in mainland China (#1121)

_config.yml

@@ -80,10 +80,16 @@ footer:
     # Version info of NexT after scheme info (vX.X.X).
     version: true
 
-  # Beian ICP information for Chinese users. See: http://www.beian.miit.gov.cn
+  # Beian ICP and gongan information for Chinese users. See: http://www.beian.miit.gov.cn, http://www.beian.gov.cn
   beian:
     enable: false
     icp:
+    # The digit in the num of gongan beian.
+    gongan_id:
+    # The full num of gongan beian.
+    gongan_num:
+    # The icon for gongan beian. See: http://www.beian.gov.cn/portal/download
+    gongan_icon_url:
 
 # Creative Commons 4.0 International License.
 # See: https://creativecommons.org/share-your-work/licensing-types-examples

layout/_partials/footer.swig

@@ -1,7 +1,11 @@
 <div class="copyright">{#
 #}{%- set current = date(Date.now(), "YYYY") %}{#
 #}{%- if theme.footer.beian.enable %}{#
-#}  {{ next_url('http://www.beian.miit.gov.cn', theme.footer.beian.icp + ' ') }}{#
+#}{{ next_url('http://www.beian.miit.gov.cn', theme.footer.beian.icp + ' ') }}
+  {%- if theme.footer.beian.gongan_icon_url %}<span><img src="{{ theme.footer.beian.gongan_icon_url }}" style="display:inline-block;"/>
+  {%- endif %}
+  {{ next_url('http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=' + theme.footer.beian.gongan_id,
+  theme.footer.beian.gongan_num + ' ') }}{#
 #}{%- endif %}{#
 #}&copy; {% if theme.footer.since and theme.footer.since != current %}{{ theme.footer.since }} – {% endif %}{#
 #}<span itemprop="copyrightYear">{{ current }}</span>