[gnome-shell] (16 commits) Non-fast-forward update to branch uajain/adapt-user-avatar-part2

[Umang Jain <uajain src gnome org>]

The branch 'uajain/adapt-user-avatar-part2' 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:

  9e8c7d5... unlockDialog: Create auth prompt on demand
  0a7ebe9... screenShield: Rework key focus management
  3b120ab... screenShield: Cleanup _ensureUnlockDialog
  9dc0418... screenShield: Remove lock screen group from Crtl-Alt-Tab ma
  5c4da70... userWidget: Allow vertical orientation for user avatars
  4d7ca8f... authPrompt: Remove Next button and its references
  a1cb5d1... authPrompt: Move cancel button, entry and spinner to a sing
  626a418... authPrompt: Iconize the cancel button
  a473038... unlockDialog: Remove 'Login as another user' Label
  74727f1... authPrompt: Add "Enter Password" as password-entry hint-tex
  7378b8d... authPrompt: Do not display "Password:" Label
  73aca4e... theme: Add top padding to unlock-dialog-clock-time
  1532730... loginDialog: Apply CSS to sessionMenuButton according to mo
  91e6f28... loginDialog: Move and relayout sessionMenuButton to bottom 
  f58d027... userWidget: Adapt if user is not mentioned for username log
  e06d766... userWidget: Revamp username-based login flow

Commits added to the branch:

  d4c7357... unlockDialog: Create auth prompt on demand (*)
  c60e614... screenShield: Rework key focus management (*)
  712c041... screenShield: Cleanup _ensureUnlockDialog (*)
  4c92048... screenShield: Remove lock screen group from Crtl-Alt-Tab ma (*)
  fdd75a6... userWidget: Allow vertical orientation for user avatars
  8a2e9b0... authPrompt: Remove Next button and its references
  b5344a2... authPrompt: Move cancel button, entry and spinner to a sing
  d451834... authPrompt: Iconize the cancel button
  34a6dbb... unlockDialog: Remove 'Login as another user' Label
  72eaa50... authPrompt: Add "Enter Password" as password-entry hint-tex
  d50825a... authPrompt: Do not display "Password:" Label
  9b3deaf... theme: Add top padding to unlock-dialog-clock-time
  6fd5128... loginDialog: Apply CSS to sessionMenuButton according to mo
  c765e0e... loginDialog: Move and relayout sessionMenuButton to bottom 
  45db515... userWidget: Adapt if user is not mentioned for username log
  5c5d282... userWidget: Revamp username-based login flow

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