Enhancement #420: Use last document date for directory (doc, group, list...)

• Author: Vincent Osele
• Status: New
• Priority: Normal
• Assignee:
• Category:
• Target version:
• Resolution:
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Ref: http://kune.cc/#!kune.lists.6511.7050

I saw that doc directories doesn't have a date/time instead of doc itself.
Same thing for task groups.

I suggest to add one, calculated with the date of last modified file (or dir).
A user should see in top most dir if there are something new inside subdir.