[gnome-boxes] (18 commits) Created branch wip/rishi/rhel

[Debarshi Ray <debarshir src gnome org>]

The branch 'wip/rishi/rhel' was created.

Summary of new commits:

  729590f... os-database, wizard-source: Use named constants
  d6906bf... util: Simplify code
  da9c48c... wizard, wizard-source: Use the headerbar to go back from "E
  1360e8f... wizard-source: Use 'requires' instead of 'assert'
  5272ea3... wizard-source: Group the sources into local files, and ever
  ed0c99e... wizard-source: Separate the groups of sources using heading
  5824dee... wizard-source: Move the file selection button next to the h
  fde43d3... wizard-source: Align each page separately, instead of the w
  d9de1f0... wizard: Let the WizardSource expand if it wants to
  9654e63... wizard, wizard-source: Don't align & margin WizardSource
  10a9507... downloader, wizard: Support a custom filename for downloade
  1959aed... wizard: Allow a custom filename when sanity-checking downlo
  185feb6... wizard: Wire the custom filename to the URI validator
  2698bca... wizard: Wire the custom filename to the downloader
  28feafe... configure: Require json-glib and webkitgtk+
  68423f5... configure: Require gtk+ >= 3.22.20
  a982ed5... wizard-source: Add a WebView with progress indication
  88a3bc0... wizard, wizard-source: Support gratis RHEL boxes