PR #5076 is incomplete

[CharlieFenton]

Manager: don't clear in-use prefs when disable in-use computing #5076 still clears certain values when it should not.

• With Suspend when non_BOINC CPU usage is above xxx % checked (set on) in either section (when computer is in use or when computer is not in use) :
  - Uncheck it (turn it off).
  - The value is not preserved when that checkbox is again set (turned on.)

• In the When computer is in use section, with Suspend when computer is in use unchecked (off) and Suspend when non_BOINC CPU usage is above xxx % checked (set on):
  - Check (turn on) Suspend when computer is in use and click on Save.
  - Reopen the dialog
  - The Suspend when non_BOINC CPU usage is above xxx % is no longer checked, and its previous value is lost.

• With Suspend if no mouse or keyboard input in last xxx minutes checked (set on), enter a value for it.
  - Uncheck it (turned it off).
  - The value is not preserved when that checkbox is again set (turned on.)

I realize that this last is no directly related to the new not-in-use preferences, but it hound be fixed as well.