Add search to the 'Plan to clone from' drop-down inside the 'Clone job' page

Problem Definition

The Plan to clone from drop-down inside the 'Clone job' page doesn't have a search mechanism. If you happen to have hundreds or even thousands of plans you must scroll through the results to find the plan.

Suggested Solution

Add a search mechanism to this field similar to what Bamboo has in the 'Clone plan > Plans to clone > Plan name' field.