Epic: Automate Rebuild/Republish to increase availability of apps

[chrisvire]

We will add a setting to a project that will cause it to initiate a rebuild workflow when a new version of App Builders is enabled on Scriptoria. When the rebuild is initiated, it will either:

• run rebuild workflow and stop at Verify and Publish step and notify reviewers when ready
• run rebuild workflow completely and notify reviewers of publication

Notifications will ignore user's preference of whether to receive notifications by email.

There will be an additional page in the admin pages to initiate a new rebuild.

The rebuilds should be only be initiated for projects that have completed the initial workflow and are not in the middle of a rebuild or republish workflow.

We need to decide if the rebuilds happen to all products of a project or whether we have to opt-in to auto rebuilds per product.