add ability to output iframe.php file to stdout

[jmcclelland]

Overview

Provide an API action for the iframe extension that outputs the iframe.php code to standard out.

Before

The only available API action (Iframe.installScript) is to save the iframe.php to the expected location in the web root.

However, if you are running CiviCRM with locked down permission that prevents the user that execute the cv command from writing to any source directories, the Iframe.installScript action will fail. That makes it hard to automate this process.

After

With a new API action, outputScript, we can run a cv command the sends the contents of the script to standard out, allowing the user that calls the script to save it to the right spot and/or use sudo or any other method to ensure it get's put in the right place.

Comments

We still get "[]" output at the end of the cv call. I'm not sure how to suppress that, but it's not that hard to handle.

[civibot]

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