feat: changed some broken links (#2384)

Author: marqbeniamin

docs/app/pages/PremiumThemes/PremiumThemes.vue

@@ -45,7 +45,7 @@
          <md-card>
            <md-card-media>
              <a href="https://www.creative-tim.com/product/vue-material-kit?ref=vuematerial.io" target="_blank">
-               <img src="https://s3.amazonaws.com/creativetim_bucket/products/97/original/opt_mk_vue_thumbnail.jpg?1538041206">
+               <img src="https://s3.amazonaws.com/creativetim_bucket/products/97/original/vue-material-kit-2.jpg">
              </a>
            </md-card-media>
            <md-card-content>
@@ -59,7 +59,7 @@
          <md-card>
            <md-card-media>
              <a href="https://www.creative-tim.com/product/vue-material-kit-pro?ref=vuematerial.io" target="_blank">
-               <img src="https://s3.amazonaws.com/creativetim_bucket/products/139/original/opt_mkp_vue_thumbnail.jpg?1547651786">
+               <img src="https://s3.amazonaws.com/creativetim_bucket/products/139/original/vue-material-kit-2-pro.jpg">
              </a>
            </md-card-media>
            <md-card-content>

docs/app/template/MainHeader.vue

@@ -52,7 +52,7 @@
 
               </md-menu-item>
               <md-menu-item>
-                <a href="https://www.binarcode.com/estimate-project/?ref=vuematarial.io" target="_blank">
+                <a href="https://www.creative-tim.com/services/updivision?ref=vuematarial.io" target="_blank">
                   Custom development
                 </a>
               </md-menu-item>

docs/app/template/MainNavContent.vue

@@ -26,7 +26,7 @@
       <router-link to="/themes/configuration">{{ $t('pages.themeConfiguration.nav') }}</router-link>
       <router-link to="/themes/advanced">{{ $t('pages.themeAdvanced.nav') }}</router-link>
       <router-link to="/premium-themes" class="premium-themes">{{ $t('pages.home.premium') }} <md-badge class="md-square" md-content="New" /></router-link>
-      <a href="https://www.binarcode.com/estimate-project/?ref=vuematarial.io" target="_blank">{{ $t('pages.home.custom') }}</a>
+      <a href="https://www.creative-tim.com/services/updivision?ref=vuematarial.io" target="_blank">{{ $t('pages.home.custom') }}</a>
 
     </div>