Fix export announcement bug.

app/controllers/admin/announcements_controller.rb

@@ -194,7 +194,7 @@ class Admin::AnnouncementsController < OrbitAdminController
             @thread.update(:status=>{:status=>'finish','finish_percent'=>100,'info'=>I18n.t('announcement.read_from_cache')})
           else
             excel_contents = render_to_string( handlers: [:axlsx], formats: [:xlsx] ,partial: 'export_excel.xlsx' )
-            File.open(filename, 'w') do |f|
+            File.open(filename, 'wb') do |f|
               f.write excel_contents
             end
           end

app/views/admin/announcements/import.html.erb

@@ -6,7 +6,7 @@
     <div class="modal-dialog" role="document">
       <div class="modal-content">
         <div class="modal-header">
-          <h3 id="threadModal"><%=t("e_paper.#{@thread.key}")%></h3>
+          <h3 id="threadModal"><%=t("announcement.#{@thread.key}")%></h3>
         </div>
         <div class="modal-body">
           <div class="thread-status"><%= @thread.status[:status] %></div>

config/locales/en.yml

@@ -96,6 +96,7 @@ en:
     add_new: Add New
     export_to_excel: Export to Excel
     export_all_anns: Export all Announcement
+    export_announcements: Export Announcements
     import_from_excel: Import from Excel
     download_example_sheet_here: Download example sheet here
     please_create_tags_cats: Please create all the tags and categories before hand. Only excel file is allowed

config/locales/zh_tw.yml

@@ -97,6 +97,7 @@ zh_tw:
     add_new: 新建
     export_to_excel: 匯出至Excel檔
     export_all_anns: 匯出所有公告
+    export_announcements: 匯出公告
     import_from_excel: 從Excel檔匯入
     download_example_sheet_here: 在此下載範例
     please_create_tags_cats: 請事先建立所有標籤及分類。 僅限Excel檔。