- Improve the wording and grammar of template notes.
- Fix formatting and/or wording for a few of the default
  templates.

Previously only admins and department managers could show assigned tickets
on open queue -even- when the feature is disabled globally. This pull
request extends the same previlege to all agents.

(regardless of the source)

Such images are attached to emails by Lotus Notes. Technically, these images
are valid attachments, although historically osTicket would reject them

Useful if the staff members administratively configure a static password
that the user should never change.

This is a regression introduced somewhere along the way in the new storage
API system for osTicket.