File Inspector now shows the old e107 version of core files

Bugfixes related to this change:

* e_file_inspector: During validation, the checksum is now calculated,
  even if the file is old.
* e_file_inspector_json: Strip the "v" from the beginning of version
  numbers in the database to make them proper PHP-standardized versions.

e107_handlers/e_file_inspector_json.php

@@ -63,6 +63,7 @@ class e_file_inspector_json extends e_file_inspector
     /**
      * Flatten a multi-dimensional associative array with slashes.
      * Excludes the second-to-last level of depth from flattening.
+     * Also removes the leading "v" from all version keys.
      *
      * Based on Illuminate\Support\Arr::dot()
      *
@@ -84,6 +85,11 @@ class e_file_inspector_json extends e_file_inspector
             }
             else
             {
+                foreach ($value as $versionWithV => $checksum)
+                {
+                    $value[ltrim($versionWithV, 'v')] = $checksum;
+                    unset($value[$versionWithV]);
+                }
                 $results[$prepend . $key] = $value;
             }
         }