mobile-config-autoconfig.js: set browser.urlbar.trimHttps to true and use xdg-desktop-portal file-picker
This change hides https:// in the urlbar by default, a change that can be undone. It also clarifies what the difference between defaultPref and pref is.
Fixes #14 (closed).
Previous !61 (closed): By using the xdg-desktop-portal file-picker we get a more native file-picker, e.g., on Plasma Mobile
Fixes #16 (closed).
Tested this on Sxmo first to rule out one UI candidate that may cause problems successfully without problems.
Edited by Peter Mack