chore: change gettext backend syntax

lib/claper/embeds/embed.ex

@@ -1,7 +1,7 @@
 defmodule Claper.Embeds.Embed do
   use Ecto.Schema
   import Ecto.Changeset
-  import ClaperWeb.Gettext
+  use Gettext, backend: ClaperWeb.Gettext
 
   @type t :: %__MODULE__{
           id: integer(),

lib/claper/quizzes/quiz_question.ex

@@ -2,7 +2,7 @@ defmodule Claper.Quizzes.QuizQuestion do
   use Ecto.Schema
   import Ecto.Changeset
 
-  import ClaperWeb.Gettext
+  use Gettext, backend: ClaperWeb.Gettext
 
   schema "quiz_questions" do
     field :content, :string

lib/claper_web.ex

@@ -24,7 +24,7 @@ defmodule ClaperWeb do
       use Phoenix.Controller, namespace: ClaperWeb
 
       import Plug.Conn
-      import ClaperWeb.Gettext
+      use Gettext, backend: ClaperWeb.Gettext
 
       unquote(verified_routes())
     end
@@ -87,7 +87,7 @@ defmodule ClaperWeb do
     quote do
       use Phoenix.Channel
       import Phoenix.View
-      import ClaperWeb.Gettext
+      use Gettext, backend: ClaperWeb.Gettext
     end
   end
 
@@ -107,7 +107,7 @@ defmodule ClaperWeb do
       import Phoenix.View
 
       import ClaperWeb.ErrorHelpers
-      import ClaperWeb.Gettext
+      use Gettext, backend: ClaperWeb.Gettext
 
       unquote(verified_routes())
     end

lib/claper_web/gettext.ex

@@ -5,7 +5,7 @@ defmodule ClaperWeb.Gettext do
   By using [Gettext](https://hexdocs.pm/gettext),
   your module gains a set of macros for translations, for example:
 
-      import ClaperWeb.Gettext
+      use Gettext, backend: ClaperWeb.Gettext
 
       # Simple translation
       gettext("Here is the string to translate")
@@ -20,5 +20,5 @@ defmodule ClaperWeb.Gettext do
 
   See the [Gettext Docs](https://hexdocs.pm/gettext) for detailed usage.
   """
-  use Gettext, otp_app: :claper
+  use Gettext.Backend, otp_app: :claper
 end

lib/claper_web/notifiers/leader_notifier.ex

@@ -1,6 +1,6 @@
 defmodule ClaperWeb.Notifiers.LeaderNotifier do
   use Phoenix.Swoosh, view: ClaperWeb.LeaderNotifierView, layout: {ClaperWeb.LayoutView, :email}
-  import ClaperWeb.Gettext
+  use Gettext, backend: ClaperWeb.Gettext
 
   def event_invitation(event_name, email, url) do
     new()

lib/claper_web/notifiers/user_notifier.ex

@@ -1,6 +1,6 @@
 defmodule ClaperWeb.Notifiers.UserNotifier do
   use Phoenix.Swoosh, view: ClaperWeb.UserNotifierView, layout: {ClaperWeb.LayoutView, :email}
-  import ClaperWeb.Gettext
+  use Gettext, backend: ClaperWeb.Gettext
 
   def magic(email, url) do
     new()

lib/claper_web/views/leader_notifier_view.ex

@@ -1,5 +1,5 @@
 defmodule ClaperWeb.LeaderNotifierView do
   use Phoenix.View, root: "lib/claper_web/templates"
-  import ClaperWeb.Gettext
+  use Gettext, backend: ClaperWeb.Gettext
   use PhoenixHTMLHelpers
 end

lib/claper_web/views/user_notifier_view.ex

@@ -1,6 +1,6 @@
 defmodule ClaperWeb.UserNotifierView do
   use Phoenix.View, root: "lib/claper_web/templates"
-  import ClaperWeb.Gettext
+  use Gettext, backend: ClaperWeb.Gettext
   import Phoenix.HTML
   use PhoenixHTMLHelpers
 end