[Component Chooser] Add ComboBox with browsers

Authored by broulik on Jul 26 2017, 2:32 PM.

Description

[Component Chooser] Add ComboBox with browsers

This makes the dialog more user-friendly by providing a ComboBox with applications that provide the
"WebBrowser" category instead of only providing a "guess contents" and "custom command" text field.

Differential Revision: https://phabricator.kde.org/D6917

Details