Add creation date indexing; differentiate dates on show page; fix small bug in display_metadata helper
Add creation date display as a parenthetical after publication date
Change 'Publication Date' label back to 'Date'
Revert more date changes
Date facet should include both publication date and creation date
Merge pull request #396 from avalonmediasystem/bugfix/VOV-3034

Add creation date indexing; differentiate dates on show page