Fix "Can't use function return value in write context" error in display.php.
[ticket/617] Fix other "Can't use method return value in write context" errors.

CUSTDB-617
[ticket/617]Fix other "Can't use method return value in write context" error.

CUSTDB-617
Fix issue where contrib is still marked as new after approving it.

This issue occurs when using the "Install style demo" option.
$this->contrib data is not updated after calling $this->queue->approve(),
therefore when submitting the demo url value, the already updated contrib data
in the database is reverted back to its pre-approval state.
Add missing store/index.htm.
Merge branch 'ascraeus' into develop

* ascraeus:
  Add missing store/index.htm.
  Fix issue where contrib is still marked as new after approving it.
  [ticket/617]Fix other "Can't use method return value in write context" error.
  [ticket/617] Fix other "Can't use method return value in write context" errors.
  Fix "Can't use function return value in write context" error in display.php.