Send-via-email template | On/off toggle

Description

Possibility to turn on/off custom template.
Possibility to revert to default template.

Remove html template (not used any more)

For testing:

  • toggle off - should be displayed default title/content template, user should not be able to modify it

  • toggle on- should be displayed last modify of custom template, user should be able to modify template

  • state of toggle and custom template should be possible to save

  • after restore default value button, template and toggle state should be restored to its original values (custom template should has default template value)