Arvados

It looks like the input and output sections for the workflow definition page are just direct copies of those sections when created for the workflow execution page. Since these sections have different use cases and mean slightly different things - the sections should be adjusted accordingly.

Suggestions/Examples are as follows:
(1) Remove the following columns from Output since they don't mean anything in terms of workflow definition page: Default Value, Collection (I don't think outputs can have default values)
(2) Remove the following columns from Input since they don't mean anything in terms of workflow definition page: Collection
(3) Since there is only the parameters tab and not the JSON tab or Collection for either Output or Input, then remove the single tab. The section itself if already labeled Input Parameters or Output Parameters so we don't need the extra tab.