Remove unused import.
Move date_utils to common/djangoapps/util
Add strftime_localized function, not called yet.
Fix i18n errors found along the way.
Use strftime_localized for dates.
Add strftime to the i18n runtime service.
Refer to the corresponding change in XBlock.
Latest eo language files.
Merge pull request #2608 from edx/ned/date-l10n

strftime_localized