Tasks: Support manual sorting in CalDAV lists

[abaker]

[ccoenen]

other clients seem to piggy-back on the X-APPLE-SORT-ORDER property for this. ical / CalDAV does not seem to define a standard way for it. Here's an example gist of tasks sorted in ical: https://gist.github.com/untitaker/6fd67c2d75a4eea78573 (taken from: https://github.com/dmfs/opentasks/issues/118#issuecomment-65945625)

Also https://github.com/owncloud/tasks/issues/86#issuecomment-244610409 is relevant and contains more info on how to interpret it. Then there's a WIP PR in nextcloud/tasks

[szaimen]

https://github.com/nextcloud/tasks/pull/237 was just merged 🎉

[dohlin]

Sweet!! Does this mean we might see this feature added to the tasks app soon?

[szaimen]

I am not the right person to ask that...

[abaker]

Yeah I'm going to try to get to this soon

[abaker]

I've implemented the query to display the manual order from the Nextcloud Tasks app. I still have to implement the drag and drop logic for modifying the manual order. I should have a play store beta out early next week

[abaker]

Added in e6beaddbd64cd7eb4cfeece3e1754ff5e7371c98. I need to do some more testing but I'll try to get a beta out tomorrow

[abaker]

I just published a new Play Store beta that includes manual sorting for CalDAV and EteSync