[ticket/11647] Fix tests for INCLUDEJS

PHPBB-11647
[ticket/11647] New assets handling

PHPBB-11647
[ticket/11647] Fix invalid variable name

PHPBB3-11647
[ticket/11647] Use $config for assets_version

PHPBB3-11647
[ticket/11647] Allow custom ports

Allow custom port number in schema-relative URLs

PHPBB3-11647
[ticket/11647] Always use &amp; for URLs

Remove code for URLs separated with ;
Add test case for mix of & and &amp; in URLs

PHPBB3-11647
Merge pull request #1519 from cyberalien/ticket/11647

Fix INCLUDEJS URLs handling