Edit Memo's Start date in-table as DATE by default
A memo does not have the concept of “All day”, unlike tasks and event. When creating a memo, the user can choose only a date as start. But in the “Memos view” the user can show for each memo a “Start date” column and by clicking on it, the user can set not only a date, but also a start time for the memo. Opening the task afterwards shows behind the “Start date” field also a time entry. As it is likely that other software will create VJOURNALs with time component, and Evolution can already deal with those iCalendar objects, it is reasonable if Evolution can also create Memos with start time, resolving this way the inconsistency.
For memos with “Start date”, the preview in the “Memo view” shows “Start date”, “End date” and “Due date”. The latter two shall not be shown.