[epiphany] (28 commits) Non-fast-forward update to branch mcatanzaro/#1800

[Michael Catanzaro <mcatanzaro src gnome org>]

The branch 'mcatanzaro/#1800' was changed in a way that was not a fast-forward update.
NOTE: This may cause problems for people pulling from the branch. For more information,
please see:

 https://wiki.gnome.org/Git/Help/NonFastForward

Commits removed from the branch:

  d29a75a... window-commands: fix warning when opening import dialog
  b5db0f1... Fix crashes and misbehavior when importing bookmarks
  1cf72e7... Fix file chooser hang when importing bookmarks

Commits added to the branch:

  15c13e1... Prepare 43.alpha (*)
  f3b9700... WebExtensions: Add initial commands API (*)
  b5f4b51... WebExtensions: commands: Update to new API handler style (*)
  ec8f130... WebExtensions: Refactor commands API (*)
  1223423... build: Set GLIB_VERSION_MAX_ALLOWED (*)
  7827c2b... WebExtensions: Add easy button to open web-inspector for ba (*)
  2298fb9... Update Ukrainian translation (*)
  93413cd... Update Persian translation (*)
  87b442e... Update Portuguese translation (*)
  c024625... WebExtension: Check that accelerator does not already exist (*)
  9822ed6... WebExtensions: Create new function for handling command acc (*)
  f7e21da... WebExtensions: Confirm that accelerator is not null (*)
  adb1c6a... Update Indonesian translation (*)
  f90bf63... WebExtensions: Use shared Epiphany WebsiteDataManager (*)
  27e4eee... WebExtensions: Enable sandbox for extension processes (*)
  216bf53... WebExtensions: Disable hardware acceleration to lower memor (*)
  f9e0c51... Update Hebrew translation (*)
  dcee41f... Update to highlight.js 11.6.0 (*)
  6dff78b... Remove PDF.js (*)
  e2ca3f7... Require WebKitGTK 2.37.1 (*)
  74e1a69... WebExtensions: Properly set the Content-Security-Policy (*)
  90ddead... Update Turkish translation (*)
  5d7133f... Update Catalan translation (*)
  c988d85... Fix the Basque help translation (*)
  6e47fe3... window-commands: fix warning when opening import dialog
  321d075... Fix crashes and misbehavior when importing bookmarks
  b1dead9... window-commands: set parent widget properly
  cf0b723... window-commands: work around native dialog hang

(*) This commit already existed in another branch; no separate mail sent