Added Text–Shaddow to due–date
Bugfix

Widget onListNameClick had shown the wrong List
Keyguard–Widget is now working
Fixed #31
Notifications

* Added Option to show/hide notifications if there are no tasks
* Cancel notification if the user do not want to see it
Fixed #29
Small Clean-Up
Bugfixing/Cleanup
Merge with nextTry
Add generic Pair Class
Fix DateTimeformate
Fix Database-Update
Improve Sync, Add Tasks/Lists to server work(tested)