disable the required xprivacy restriction

currently, it returns false, and this confuses user.
This commit make the restriction not clickable.
Apply template to new system applications, enabled on demand restricting for system applications

Refs #1704
Merge pull request #1703 from liudongmiao/patch-selfrestriction

Disable XPrivacy restrictions which will be ignored
Show restrictions which cannot be applied as disabled
Remove setting 'Restrict dangerous functions'

Refs #1704
Allow batch fetching of system applications

Refs #1704
Fix compilation error

Refs #1704
Fix applying template

Refs #1704
Updated FAQ
Updated FAQ