It move the magic number of column results to the sql statement
and improves the mock a little bit.
Change-Id: I101067444cf27ec5dea0c72de7fd484a7e8710f0
Reviewed-by: Thomas Hartmann <thomas.hartmann@qt.io>
The image cache is saving images and icon of this images in a sqlite
database. If there are no images they are generated in the backgound.
The icons are fetched by item library.
Task-number: QDS-2782
Task-number: QDS-2783
Task-number: QDS-2858
Change-Id: I5a32cccfef7f8fd8eb78902605a09f5da18ce88e
Reviewed-by: Tim Jenssen <tim.jenssen@qt.io>