improve tasks: add the task state (is computed on the transform), change the add so it can also edit a task
task filter by state, the code is a little messy becouse the state is calculated in the transform
task filter by owner and assigned in the list and in the publish of Task's collection
Merge branch 'master' of github.com:Exartu/Exartu-CRM
fix state filter and add search in task's list
Merge branch 'master' of github.com:Exartu/Exartu-CRM
Merge branch 'master' of github.com:Exartu/Exartu-CRM
send email fix: not send if there are errors, and log errors from server