[pvr] Update and persist channel group members from client on boot if…

[phunkyfish]

… changed

Description

Persists the channel group members after receiving the data from the PVR addons.

Motivation and Context

When the PVR addon loads if the channel group members change this was not persisted and the only to way to change it was to reset the PVR database (or have the addon trigger a channel/group) reload.

How Has This Been Tested?

On Mac OSX, using both a v35 and v36 PVR DB.

Screenshots (if appropriate):

Types of change

• Bug fix (non-breaking change which fixes an issue)
• Clean up (non-breaking change which removes non-working, unmaintained functionality)
• Improvement (non-breaking change which improves existing functionality)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that will cause existing functionality to change)
• Cosmetic change (non-breaking change that doesn't touch code)
• None of the above (please explain below)

Checklist:

• My code follows the Code Guidelines of this project
• My change requires a change to the documentation, either Doxygen or wiki
• I have updated the documentation accordingly
• I have read the Contributing document
• I have added tests to cover my change
• All new and existing tests passed

[ksooo]

Needs some more love.

[ksooo]

lgtm