#52 Fix upload students

~dev_rating/application/classes/FileParser.php

@@ -9,15 +9,10 @@ class FileParser
      * @return array errors
      */
     public static function uploadStudents($filename, $facultyID) {
-        if (File::mime($filename) != 'text/plain')
-            return [];
-
-        $file = file_get_contents($filename);
-        $content = explode("\r\n", self::toUTF8($file)); // DO NOT REPLACE " BY ' THERE!
+        $content = explode("\r\n", self::toUTF8(file_get_contents($filename)));
 
         $i = 0;
         $errors = [];
-
         foreach ($content as $line) {
             $line = explode(';', $line);
             $line = Arr::map('trim', $line);