[gtk] (34 commits) Non-fast-forward update to branch wip/baedert/for-master

[Timm Bäder <baedert src gnome org>]

The branch 'wip/baedert/for-master' 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:

  56ed508... fontbutton: Shorted clear_font_data a bit
  48d3161... notebook: Use a box layout

Commits added to the branch:

  6bfe171... gtkapplication-dbus: Initialise screensaver-active property (*)
  6320bd5... fontbutton: Shorten clear_font_data a bit (*)
  54ed31e... notebook: Use a box layout (*)
  605284b... textview: fix textview drawing in presence of gutters (*)
  7927f7a... textview: clip to text window when drawing (*)
  4987cb0... Merge branch 'wip/chergert/fix-textview-clip' into 'master' (*)
  ff5eac6... Merge branch 'wip/rah/screensaver-active-fix' into 'master' (*)
  51b2fd1... build: gtkbuilderparser.c contains g-i annotations for publ (*)
  67bd28e... gtk: Fix parameter annotations for gtk_buildable_parse_cont (*)
  97231ca... gtk: Fix some g-i annotation warnings (*)
  c0071a0... text util: Remove an unused function (*)
  222e05c... Remove unused includes (*)
  5a93449... window: Make fallback menu a popover (*)
  03e3043... menutoolbutton: Add support for popovers (*)
  1b271f3... notebook: Use a popover for the tab menu (*)
  b14b0ef... toolbar: Use a popover for overflow (*)
  87e7fa9... Merge branch 'wip/kill-menu' into 'master' (*)
  7de0764... headerbar: Fix end-packed child order (*)
  c2b823f... Update Persian translation (*)
  0a2a53e... levelbar: Use a bin layout
  f9464e2... video: Use a bin layout
  f7b5657... menubar: Use a box layout
  f083f8a... scrolledwindow: Remove set_placement_internal()
  03044ea... filechooserbutton: Remove an outdated comment
  7d0e871... filechooserbutton: Remove priv->child
  154bacb... filechooserbutton: Add icon to default (None) combo box ite
  9aa1166... dialog: Remove useless gtk_widget_show() call
  7ee2345... colorbutton: Use a bin layout
  4ef6521... fontchooserwidget: Use a bin layout
  ad74295... gl renderer: Fix rounded rect intersection
  e8f8c75... searchentry: Use edit-clear-all-symbolic as clear icon
  f2269ef... searchentry: Use a box layout
  62d7fef... snapshot: Try to avoid some linear gradient nodes
  b7f9623... eventcontrollerscroll: Events are unhandled by default

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