Also add new sidebarRight setting

config/config.exs

@@ -292,6 +292,7 @@ config :pleroma, :frontend_configurations,
     redirectRootLogin: "/main/friends",
     redirectRootNoLogin: "/main/all",
     scopeCopy: true,
+    sidebarRight: false,
     showFeaturesPanel: true,
     showInstanceSpecificPanel: false,
     subjectLineBehavior: "email",

config/description.exs

@@ -1117,6 +1117,7 @@ config :pleroma, :config_description, [
             redirectRootLogin: "/main/friends",
             redirectRootNoLogin: "/main/all",
             scopeCopy: true,
+            sidebarRight: false,
             showFeaturesPanel: true,
             showInstanceSpecificPanel: false,
             subjectLineBehavior: "email",
@@ -1257,6 +1258,12 @@ config :pleroma, :config_description, [
             description: "Copy the scope (private/unlisted/public) in replies to posts by default"
           },
           %{
+            key: :sidebarRight,
+            label: "Sidebar on Right",
+            type: :boolean,
+            description: "Change alignment of sidebar and panels to the right."
+          },
+          %{
             key: :showFeaturesPanel,
             label: "Show instance features panel",
             type: :boolean,