Download Manager Ideas

Purpose
To improve the Scribus Download/Resource Manager introduced in r19821

Issues
bugid = 11129,4379,12686,12937 header = true color = true show  = id, category, priority, created, updated, summary

ToDos

 * Create script that checks the asset links on http://services.scribus.net

Ideas

 * Add Redacted Font
 * Add Google Material Design Icons like Inkscape did

Proposal

 * To have the download manager use the latest Qt GUI features. Have someone start changing the Scribus UI via this new feature