change new image size for carusel, remove unused alerts code for register

frontend/src/components/Auth/Carousel.vue

@@ -1,10 +1,10 @@
 <template>
   <div>
-    <b-carousel :interval="30000">
-      <b-carousel-slide img-src="/img/template/Foto_01.jpg"></b-carousel-slide>
-      <b-carousel-slide img-src="/img/template/Foto_02.jpg"></b-carousel-slide>
-      <b-carousel-slide img-src="/img/template/Foto_03.jpg"></b-carousel-slide>
-      <b-carousel-slide img-src="/img/template/Foto_04.jpg"></b-carousel-slide>
+    <b-carousel :interval="3000">
+      <b-carousel-slide img-src="/img/template/Foto_01_2400_small.jpg"></b-carousel-slide>
+      <b-carousel-slide img-src="/img/template/Foto_02_2400_small.jpg"></b-carousel-slide>
+      <b-carousel-slide img-src="/img/template/Foto_03_2400_small.jpg"></b-carousel-slide>
+      <b-carousel-slide img-src="/img/template/Foto_04_2400_small.jpg"></b-carousel-slide>
     </b-carousel>
   </div>
 </template>

frontend/src/pages/Register.vue

@@ -68,14 +68,6 @@
             </b-col>
           </b-row>
 
-          <b-alert v-if="showError" show dismissible variant="danger" @dismissed="closeAlert">
-            <span class="alert-icon"><i class="ni ni-point"></i></span>
-            <span class="alert-text">
-              <strong>{{ $t('error.error') }}</strong>
-              {{ messageError }}
-            </span>
-          </b-alert>
-
           <b-row class="mt-4 mb-4">
             <b-col class="mb-4 mb-md-0">
               <b-form-checkbox