... per @martenson's suggestion and with @erasche2 permission.
Wonder if we want to double down on these buttons and convert tool shed link and citations handling to use this mechanism or perhaps add a drop down "gear" menu with these options ala the history panel.
Allow users to select dataset collections in place of individual datasets for data tool parameters with multiple="true" enabled (if all elements of collection would be valid as input to this parameter).
Restrict collection reductions to flat collections. If a user wanted to reduce a nested collection they probably want to map of the subcollections reducing each and building a collection of the reductions. TODO: The sentence is probably unintelligiable, need to provide a concrete example.
A functional test demonstrating these reductions in included.
Migrated the logic out of tool_form.mako that I could readily test, the rest of the custom javascript in tool_form.mako should likewise be migrated I assume.
Holds a lot of logic downstream in my work related to running tools in parallel across many datasets and over dataset collections - https://github.com/jmchilton/galaxy-central/blob/collections_1/static/scripts/galaxy.tools.js.
John Chilton