Move explicit render of mods_metadata_sections from show_image partial to automatically rendered _record_metadata_{display_type} partial).
Merge pull request #165 from sul-dlss/md-sections-fix

Move explicit render of mods_metadata_sections from show_image partial...
fixes #167 by removing div from dl
Merge pull request #168 from sul-dlss/dl-fix

fixes #167 by removing div from dl
Don't print mods fields when the values is a blank string.