for mail shares:
1- Changes style of "forgot password?" and "Back" button
2- Adds information about share password's expiration time in the emails sent.
3- Shows password expiration time in the Share menu
4- Fixes an issue when the message "Password expires..." would be shown for non email share types (which don't have temporary passswords)
5- At share's creation, password should only be sent when it's a permanent one
See also https://github.com/nextcloud/server/issues/31952
Signed-off-by: Cyrille Bollu <cyrpub@bollu.be>
Signed-off-by: nextcloud-command <nextcloud-command@users.noreply.github.com>