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'
Journal: add cache for day offsets in list to ease updating the current-day display when scrolling
Fixes #20
Merge remote-tracking branch 'origin' into issue20
Merge branch 'issue20' of https://github.com/dperpeet/cockpit into issue20