Term and label mappings in term panel

[alexsu0014]

I'd like to have term and display label mappings in term panel.

Below is an exmple

Gender values in my index are 0 and 1, but they are hard to be understood for end users, so I want to convert them to 'Female' and 'Male'.

Term script is alternative on elasticsearch, but kibana does not support the feature, and on the fly translation for each record is not efficient for the case.

[rashidkpc]

This falls under the script fields enhancement we're planning for Beta 3: #1537