Include the board as a workflow destination

[JoelWiebe]

Description

Include board as Distribution Workflow destination and fix Task Workflows bug. We want to allow for two cases: (1) if (a) the source and destination are different and (b) the destination is a board, drop the post in the middle of the board (the same as downloading a post from a bucket); (2) If the source matches the destination exactly, do not attempt to move the posts.

Setup
Steps to reproduce:

• Create an account and login
• On the My Projects page, click the plus button in the right of the nav bar to create a new project

• On the right of the boards dashboard, click the plus button to create a board

• In the board, go to the top-right menu and click on Manage Groups, then create a new group

• Then go to the top-right menu and click on Manage Buckets and Workflows and create at least one Bucket

• Next in that same modal pop-up, under the Create Workflow tab, click on the Destinations to see that the board is not displayed in the list

The first goal is to get the board name to show up in this list and behave as a destination for posts to be sent to using the workflow.

• NOTE: You may want to create a few posts on the canvas then try out this workflow tool to get a sense of how it works. Once you have posts in your source, go to the Manage Workflows tab and click the play button next to the workflow to execute the action

Details

1. Allow for boards as destinations

• For Workflow authoring, add the board name to the Destination select control for the Distribution Workflows
• Add CANVAS and BUCKET identifiers to each of the destinations and sources by following the TODO instructions

2. Don't move posts if source and destination match

• For Distribution workflows, allow the destination to include one of the source items, as long as there are multiple destinations
• For distribution workflows, if there is only one destination and the source matches the destination, "Destinations may include the source, but cannot match exactly"