Bug 10283: Hide "many items" on second tab when using OpacSeparateHoldings

Bug 10283: Hide "many items" on second tab when using OpacSeparateHoldings

If there are over 50 items in the holdings or Other holdings tab, the
warning and link 'This record has many physical items. Click here to
view them all.' is only shown for the first tab.

Test plan:
- Switch on the OpacSeparateHoldings pref.
- Go on a biblio detail page at the OPAC with more than 50 items
- Check that the 'view all' link appears on the second tab.

Signed-off-by: Srdjan <srdjan@catalyst.net.nz>
Signed-off-by: Katrin Fischer <Katrin.Fischer.83@web.de>
Works as described, passes all tests and QA script.

Signed-off-by: Galen Charlton <gmc@esilibrary.com>