Designer: Pretty JSON when exporting pipelines to assist with external version control systems

Use-case: I would like to use version control to store my pipeline assets. Organizational restrictions prevent the use of Github for version control. Right now the dev process is to export pipelines from designer and commit them to version control (Mercurial).

The Designer pipeline export operation, minifies the pipeline JSON to a single line. This makes it impossible to do any diff comparisons or review pipeline changes within a diffing tool.

Feature request: Pretty print JSON when exporting a pipeline from Designer: