[#1794] Update file name display is sidebar

Author: catarak

client/modules/IDE/components/FileNode.jsx

@@ -16,7 +16,7 @@ function parseFileName(name) {
   const nameArray = name.split('.');
   if (nameArray.length > 1) {
     const extension = `.${nameArray[nameArray.length - 1]}`;
-    const baseName = nameArray.slice(0, -1).join('');
+    const baseName = nameArray.slice(0, -1).join('.');
     const firstLetter = baseName[0];
     const lastLetter = baseName[baseName.length - 1];
     const middleText = baseName.slice(1, -1);