Note remote access limitations in secure mode section of User Guide

[Qchristensen]

Link to issue number:

Summary of the issue:

The User Guide section 13.1 (Remote Access, Getting started) notes the limitation for starting a new session in secure mode. This was not noted in the secure mode section and may be missed by people looking for information there.

Description of user facing changes:

Added a line to the list of bullet points in 18.1 "Secure mode disables" to note manually initiating a new remote access session.

Description of developer facing changes:

Description of development approach:

Testing strategy:

Known issues with pull request:

Code Review Checklist:

• [ x] Documentation:
  • Change log entry
  • User Documentation
  • Developer / Technical Documentation
  • Context sensitive help for GUI changes
• Testing:
  • Unit tests
  • System (end to end) tests
  • Manual testing
• [ x] UX of all users considered:
  • Speech
  • Braille
  • Low Vision
  • Different web browsers
  • Localization in other languages / culture than English
• [ x] API is compatible with existing add-ons.
• Security precautions taken.