Fixed performance issues with showRelatedFragments:
Fixed performance issues with showRelatedFragments:

* Showing a maximum of 100 fragments now;
* Only calculating the total fragment offset on scroll now.

bertrand-caron/OFraMP,jimivdw/OFraMP,bertrand-caron/OFraMP,bertrand-caron/OFraMP,bertrand-caron/OFraMP,jimivdw/OFraMP