all ajax request must be async

Right now the dashboard freeze everytime the SoftwareUpdate field was being updated
That's not cool
updated core changelog
Merge pull request #1236 from Zentyal/jgarcia/fix-dashboard-freezes

fix dashboard freezes
force proper depends
releasing users 3.2.11
releasing samba 3.2.15
Fix parsing of the json when asking for the available server to recover
EBox::RemoteServices::Subscription::Check::check recovers for  any error raised on useers checking
added lost line
Avoid error when trying to show a no longer existent mail in queue
Fixed bug that made impossible to add rules
Merge pull request #1240 from Zentyal/jag/remoteservices-robust-subscription-check

EBox::RemoteServices::Subscription::Check::check recovers for  any error...
Merge pull request #1237 from Zentyal/rduran/fix-installer-dr

Fix parsing of the json when asking for the available server to recover
Merge pull request #1242 from Zentyal/jag/mail-show-mail-in-queue

Avoid error when trying to show a no longer existent mail in queue
Merge pull request #1246 from Zentyal/jag/trafficshaping-add-rule

Fixed bug that made impossible to add rules
Merge branch '3.2' into jjgarcia/fix-trafficshaping-bug

Conflicts:
	main/trafficshaping/ChangeLog