fix a php error
permit to use plusbutton when we are in edit mode
add label locales to actions list
improve display of actions list
add label locales action type in actions list
add label locales return code in actions list
Merge remote-tracking branch 'orthagh/master'
fix access to the main page according to profiles

The access should not be denied when you have access other than tasks.
Furthermore, the access to the task wizard must be limited to user who have
tasks "write" permission.

fixes #1980