More feature switch should be added to mail methods

Mail methods have a feature switch for vacation message, they should have some as well for alternate emails, forwarding and local only features. This will allow to deactivate from Partage method features not supported by it.

created branch 5837-more-feature-switch-should-be-added-to-mail-methods

mentioned in commit 0e5ee562

added 1h of time spent at 2018-07-03

added To Be Tested label

it's working on demo-dev

closed

added 20m of time spent at 2018-07-23

added Changed and removed To Be Tested labels

mentioned in issue #5917 (closed)