add “block import” feature

src/components/user_settings/user_settings.js

@@ -242,6 +242,14 @@ const UserSettings = {
           }
         })
     },
+    importBlocks (file) {
+      return this.$store.state.api.backendInteractor.importBlocks(file)
+        .then((status) => {
+          if (!status) {
+            throw new Error('failed')
+          }
+        })
+    },
     /* This function takes an Array of Users
      * and outputs a file with all the addresses for the user to download
      */

src/components/user_settings/user_settings.vue

@@ -180,6 +180,11 @@
           <div class="setting-item" v-else>
             <h2>{{$t('settings.follow_export_processing')}}</h2>
           </div>
+          <div class="setting-item">
+            <h2>{{$t('settings.block_import')}}</h2>
+            <p>{{$t('settings.import_blocks_from_a_csv_file')}}</p>
+            <Importer :submitHandler="importFollows" :successMessage="$t('settings.blocks_imported')" :errorMessage="$t('settings.block_import_error')" />
+          </div>
         </div>
 
         <div :label="$t('settings.blocks_tab')">