The instance and search mappers substituted a hardcoded German
"(Ohne Titel)" for an empty title, so EventInstance.title was never blank
and every ifBlank fallback in the views was dead code. Leave the title
blank and let the UI supply the translated string.
This also restores the drag identity guards in MonthDrag/TimelineDrag,
which check isNotBlank so two untitled events are not taken for the same
event (#253) — the injected literal made that check always pass.
makiolaj
91406daf3e