Allow default configuration to be modified

Problem/Motivation

When using the -smart-trim token there's no way of controlling the defaults if the "token" view mode has not been modified.

Proposed resolution

Provide a settings page for controlling the defaults when using the -smart-trim token.

Remaining tasks

Provide a settings page for controlling the defaults when using the -smart-trim token.

User interface changes

A new settings page would allow controlling the default settings for the -smart-trim token.

API changes

tbd

Data model changes

tbd