Allow configuration to be static/readonly (#4315)

* Allow configuration to be static/readonly

* Make all components disableable

* Improve disabled component styling

* Rename edits allowed field in configuration

* Fix CI

config/default.yaml

@@ -243,6 +243,11 @@ peertube:
     # You can use a custom URL if your want, that respect the format behind https://joinpeertube.org/api/v1/versions.json
     url: 'https://joinpeertube.org/api/v1/versions.json'
 
+webadmin:
+  configuration:
+    edit: 
+      allowed: true
+
 cache:
   previews:
     size: 500 # Max number of previews you want to cache

config/production.yaml.example

@@ -241,6 +241,11 @@ peertube:
     # You can use a custom URL if your want, that respect the format behind https://joinpeertube.org/api/v1/versions.json
     url: 'https://joinpeertube.org/api/v1/versions.json'
 
+webadmin:
+  configuration:
+    # Set to false if you want the config to be readonly
+    allow_edits: true
+
 ###############################################################################
 #
 # From this point, all the following keys can be overridden by the web interface