Improved handling of settings changes in clip album.
Improved handling of settings changes in clip album.

A clip album now remains on the same page if the pagination does not
change with the settings. It used to always navigate to page zero,
regardless of whether or not the pagination changed.

Also fleshed out abstract clip manager class.
HaroldMills/Vesper,HaroldMills/Vesper,HaroldMills/Vesper,HaroldMills/Vesper,HaroldMills/Vesper