Allow clicking tasks to complete or re-open on DAKboard does not work with Multiple Todoist accounts

[rsalsbery]

While testing for a customer we discovered that the ability to complete a task with Todoist when there are multiple accounts linked to DAKboard, the most recently linked or active account will allow you to check off events. What we have found is listed below:

• All blocks have the option to "Allow clicking tasks to complete or re-open on DAKboard" enabled.
• All blocks for the same Todoist account will have the same behavior.
• The account that enables tasks to be marked as completed changes based on which the Todoist account was last logged in to or Linked to the account.
• The last linked account remains dominant until you remove the block that it was linked in, then the most recently logged-into Todoist account becomes dominant.

The expected behavior would be that all accounts should independently be able to be modified tasks on the related account, even from the same screen.

[Dan-Peck]

Merged in @ bb10621 and added to the queue for upcoming release to the live site.