The report should contain a tree view showing the structure of the application.
Then the individual archives (projects) might have a treeview with the files of the archive.
Further, marking an item in the tree (a checkbox?) might filter the items displayed in the report.
Some components we could use:
These look good:
TreeSelect - http://www.jqueryrain.com/2014/04/jquery-treeselect-hierarchy-select-widget/
Bonsai - http://www.jqueryrain.com/2014/06/jquery-bonsai-super-lightweight-jquery-tree-plugin/
Bootstrap treeview - http://www.jqueryrain.com/?9_I6fGfI . Scroll to see the checkboxes.