Add native EteSync support

[4jNsY6fCVqZv]

EteSync "Secure, end-to-end encrypted, and privacy respecting sync for your contacts, calendars and tasks." Reference to the discussion in the Planner repository alainm23/planify#307 (comment)

I have no experience with EteSync myself, but I find the idea of end-to-end encryption of sensitive data in the context of elementary OS very useful.
This issue should provide room for discussion. Consciously also about possible alternatives, how the desired qualities can be provided independently of certain products.

Should be easy to realize with planned EDS support. etesync/etesync-dav#5 (comment)

[tasn]

The EteSync module is now released and is in the official GNOME repos! So it's just a matter of adding the tiny UI to add the account. You don't even need the DAV support anymore, it's supported directly in GNOME.

[shawn1thompson]

Per EteSync, the module is complete and Gnome has native support. I'm assuming this is via the EDS module.

Also, I'm trying to setup EteSync DAVadapter on Odin. I've installed it and the local server is up and running, but no matter what URL I give to Online Account, it comes back with a 401 error. I'm assuming this isn't EteSync related, but that is an assumption.

[tasn]

You can add EteSync support directly from Evolution, and then it'll work with the rest of the system.

[shawn1thompson]

Ok. Maybe I"ll give Evolution a try. Thanks.