userportal, webadmin: i18n refresh 'sec'

- Fixed 'sec' not being i18ned on the refresh panel
drop down.
- Renamed MilisecondRenderer to MillisecondRenderer

Change-Id: I0eadb1085e6b59239d1091d894de52ca3fc3e88a
Bug-Url: https://bugzilla.redhat.com/show_bug.cgi?id=871354
Signed-off-by: Alexander Wels <awels@redhat.com>