[Fix #1285] Create an endpoint to check password strength

app/controllers/administrateurs/activate_controller.rb

@@ -1,3 +1,5 @@
+require 'zxcvbn'
+
 class Administrateurs::ActivateController < ApplicationController
   layout "new_application"
 
@@ -29,6 +31,11 @@ class Administrateurs::ActivateController < ApplicationController
     end
   end
 
+  def test_password_strength
+    score = Zxcvbn.test(params[:password], [], ZXCVBN_DICTIONNARIES).score
+    render json: { score: score }
+  end
+
   private
 
   def update_administrateur_params