Fix NullPointerException in widget.
Allow widget to be used on lockscreen
Call odDataSetChanged() in ListRemoteViewsFactory constructor to guarantee that task list is populated.
Delete todo file after logout and after changing Dropbox path.
Force a refresh after changing Dropbox path.
Display a warning message before logout or changing Dropbox path if there are local changes that haven't been pushed.
Renamed preference keys that violated our conventions.
Hide refresh notification when syncing fails due to no internet connection. Fixes #405
Merge pull request #402 from chuckbjones/401-fix-npe-widget

Fix NullPointerException in widget, closes #401
Merge pull request #403 from intrications/lockscreen-widget

Allow widget to be used on lockscreen
Merge pull request #404 from chuckbjones/397-cleanup-and-sync-on-path-change-rc

Cleanup and force refresh after changing file location, closes #397
Merge pull request #406 from intrications/fix-sync

Hide refresh notification when syncing fails due to no internet connection, closes #405