shell: Improve label text for locked account.

Fixes #1147
Closes #1148
Reviewed-by: Marius Vollmer <marius.vollmer@redhat.com>
shell: Improve button label and dialog title when creating new account

Fixes #1149
Closes #1150
Reviewed-by: Marius Vollmer <marius.vollmer@redhat.com>
shell: Clarified description for time span selection in journal

Fixes #437
Closes #1154
Reviewed-by: Marius Vollmer <marius.vollmer@redhat.com>
Merge remote-tracking branch 'upstream/master'