Fix upload file xls. Fix #1138

Author: erikaperugachi

email_composer/src/components/attachment.scss

@@ -31,12 +31,13 @@
   }
 
   .file-icon{
+    color: #fff;
+    display: flex;
     float: left;
+    font-size: 30px;
     height: 30px;
     margin: 5px 8px 5px 7px;
     width: 30px;
-    font-size: 30px;
-    color: #fff;
 
     .icon-container-image { 
       background-color: #99ccff; 

email_composer/src/containers/Composer.js

@@ -382,6 +382,11 @@ class ComposerWrapper extends Component {
     });
     const files = this.getFilesFromEvent(e);
     const filesFiltered = [...files].filter(item => {
+      if (!item.type) {
+        const texts = item.name.split('.');
+        const ext = texts[texts.length - 1];
+        if (ext === 'xls') return true;
+      }
       return !!item.type;
     });