Feature: batch imports should offer an option to stop on failure

[hakamine]

There are many cases in which a batch import could fail due to a common (not specific to a particular transfer source) cause (e.g., incorrect path specified in enduro, an AM-related error such as disk full, etc). Enduro will just attempt to complete all collections, potentially producing lots of failures that not only clutter the web UI but (more annoyingly) often would need to be cleaned up. Enduro should offer an option to interrupt a batch import on the occurrence of a failure
Enduro version: 0.41.10