Google Tasks synchronization

[CampelloManuel]

This issue tracks everything related to the Google Tasks synchronization functionality.

This used to be available in the app up to version 5.7.1, but it was removed in version 7.1.2 because it's difficult to get it working in a decent way, and most likely nobody used it in the last 5 years, at least.

This was decided in #403

If you are a developer interested in this feature, and want to work on it, use this thread to request help and tips. See #474 which is when I deleted the code useful for google tasks sync.

You will of course need to get yourself a key. Follow the instructions on this page: https://developers.google.com/tasks/firstapp#register

This uses AccountManager, which may spam annoying notifications. Be careful. See #460

[CampelloManuel]

Update: since we decided to remove Google services and all the online functionality, this feature will - most likely - never return to the app. Users interested in a note-taking app that synchronizes with google servers should use one of the following:

• gmail https://play.google.com/store/apps/details?id=com.google.android.gm
• google tasks https://play.google.com/store/apps/details?id=com.google.android.apps.tasks
• google keep https://play.google.com/store/apps/details?id=com.google.android.keep