Altered:

- AMScanDataView ~ Changed order of adding subviews to show Thumbnail
view as default when loaded.

- AMScanThumbnailView ~ Added slots to handle addition, removal and
altration of data in the model

- AMScanThumbnailView ~ Updated updateScrollBars() to properly calculate
the size of the data to be shown
Altered:

-AMSortFilterWidget ~ Now shows waiting cursor while it is running a
filter

-AMScanDataView ~ Now responds to requests to show a custom context
menu, displaying a menu with options to edit, compare, export, show
config and fix cdf