LPS-49678 Add a new parameter to DDM taglibs to set if empty field labels will be displayed
LPS-49678 ran 'ant build-taglibs'
LPS-49678 Set 'showEmptyFieldLabel' property on the field rendering context
LPS-49678 Put 'showEmptyFieldLabel' property into the freemarker context
LPS-49678 Update ftl files to consider the new option
LPS-49678 DL must hide empty field labels, otherwise a long list of metadata with no values will be displayed