Merge pull request #159 from fjg-conflux/master

Fixed undefined index notice.
Merge pull request #160 from fjg-conflux/master

CiviCRM extensions directory expects develStage in extension manifest to be lowercase.
VOL-27 - Define UI - Localize date format
VOL-27 - Define UI - Localize time entry
Merge pull request #161 from colemanw/master

VOL-27 - Define UI - Localize date format
VOL-30 - Sign-up link on event info pages should link to front end.