Add short_description field

Signed-off-by: marcin mikołajczak <git@mkljczk.pl>

config/config.exs

@@ -187,6 +187,7 @@ config :pleroma, :instance,
   email: "example@example.com",
   notify_email: "noreply@example.com",
   description: "Pleroma: An efficient and flexible fediverse server",
+  short_description: "",
   background_image: "/images/city.jpg",
   instance_thumbnail: "/instance/thumbnail.jpeg",
   limit: 5_000,

config/description.exs

@@ -536,6 +536,15 @@ config :pleroma, :config_description, [
           "Very cool instance"
         ]
       },
+      %{
+        key: :short_description,
+        type: :string,
+        description:
+          "Shorter version of instance description. It can be seen on `/api/v1/instance`",
+        suggestions: [
+          "Cool instance"
+        ]
+      },
       %{
         key: :limit,
         type: :integer,

docs/configuration/cheatsheet.md

@@ -18,6 +18,7 @@ To add configuration to your config file, you can copy it from the base config.
 * `email`: Email used to reach an Administrator/Moderator of the instance.
 * `notify_email`: Email used for notifications.
 * `description`: The instance’s description, can be seen in nodeinfo and ``/api/v1/instance``.
+* `short_description`: Shorter version of instance description, can be seen on ``/api/v1/instance``.
 * `limit`: Posts character limit (CW/Subject included in the counter).
 * `description_limit`: The character limit for image descriptions.
 * `remote_limit`: Hard character limit beyond which remote posts will be dropped.

lib/pleroma/web/mastodon_api/views/instance_view.ex

@@ -17,6 +17,7 @@ defmodule Pleroma.Web.MastodonAPI.InstanceView do
       uri: Pleroma.Web.Endpoint.url(),
       title: Keyword.get(instance, :name),
       description: Keyword.get(instance, :description),
+      short_description: Keyword.get(instance, :short_description),
       version: "#{@mastodon_api_level} (compatible; #{Pleroma.Application.named_version()})",
       email: Keyword.get(instance, :email),
       urls: %{