[balsa/oauth2-support] (30 commits) ...Merge branch 'oauth2-support' of gitlab.gnome.org:GNOME/balsa into oauth2-support

[Albrecht Dreß <albrecht src gnome org>]

Summary of changes:

  90a3059... balsa-index: Clear an idle handler at dispose time (*)
  d7243d4... Update Chinese (China) translation (*)
  63c777c... balsa-index: add a timeout to verify scrolling (*)
  b4a8690... Merge branch 'master' of gitlab.gnome.org:GNOME/balsa (*)
  100666d... Update Brazilian Portuguese translation (*)
  483070b... Updated Spanish translation (*)
  912a649... libbalsa/imap/meson.build: Add top_include path (*)
  595ac00... address-view: Set "activate-on-single-click" (*)
  e8e91f4... Remove LibBalsaCellRendererButton (*)
  4de959f... Various: Remove mentions of cell-renderer-button (*)
  c430722... Update Indonesian translation (*)
  46abbf4... Various: Clean up quit-on-close (*)
  d9f5d30... Merge branch 'master' of gitlab.gnome.org:GNOME/balsa into  (*)
  9dabff4... mailbox: Do not sort if empty (*)
  a287113... assistant_init: Do not export balsa_initdruid (*)
  404713a... Address-view: Set the "icon-name" property (*)
  4e84888... balsa-index: Set the "icon-name" property (*)
  55e2c7d... balsa-icons: rename balsa_register_pixbufs() (*)
  baa3600... Update Slovenian translation (*)
  eca4f7b... main-window: Fix some geometry (*)
  62a7327... main-window: Do not export balsa_window_fix_paned (*)
  7ed68bf... DOAP: Replace non-working maintainer email address (*)
  3425196... meson.build: Conditionally add FORTIFY_SOURCE (*)
  42624bf... meson.build: Conditionally define FORTIFY_SOURCE (*)
  8c32f9f... autocrypt: fix crash when importing a half-broken key fails (*)
  6ae54e7... prepare for OAuth2 support
  1456ea8... improve authentication mode selection
  215e204... libnetclient improvements for OAuth2 preparation
  0402a52... libnetclient testing
  d47645c... Merge branch 'oauth2-support' of gitlab.gnome.org:GNOME/bal

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