#523 Implementation of unsure participation for events

Version_3.0
open
Thomas-RCV
None
events
5
2013-12-14
2013-12-14
Thomas-RCV
No

Like MS Outlook we should have the possibility for members to set the option participation unsure.
If a member is assigned by Webmaster or leader of the event this option shouled be set automatically. The assigned member needs to confirm with yes,no or unsure. Therfore we need a additional flag in database table of the event role. It could be a numeric field with value dafault 0 for not confirmed by member, 1 confirmed by member. Also a new timestamp column for confirmation from user should be implemented in table.

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