Fix test for internal js files in block javascript

The test for whether a blocktype plugin's js file was internal (and
needed a wwwroot added) is case sensitive, and ignored https.

Change-Id: Idc81123d0367df739a698ab688b4d4a59e023da0
Signed-off-by: Richard Mansfield <richard.mansfield@catalyst.net.nz>

htdocs/blocktype/lib.php

@@ -1269,7 +1269,7 @@ class BlockInstance {
      */
     public function get_get_javascript_javascript($jsfiles) {
         foreach ($jsfiles as &$jsfile) {
-            if (strpos($jsfile, 'http://') === false) {
+            if (stripos($jsfile, 'http://') === false && stripos($jsfile, 'https://') === false) {
                 if ($this->artefactplugin) {
                     $jsfile = 'artefact/' . $this->artefactplugin . '/blocktype/' .
                         $this->blocktype . '/' . $jsfile;