Set asked for XPrivacy restriction exceptions

Closes #1416
Updated FAQ
Fix typo
Updated FAQ
Cache storage locations
Resolve host name

Closes #1415
Do not notify when on demand

Refs #1417
Do not notify if on demand (2)

Resf #1417
Updated contributing section
Limit extra to 128 characters
Prevent null pointer
Added whitelisting for folders
Whitelisting for subdomains

Closes #1418
Refactoring
1.99.52 beta
Updated support section
Formatting support section
Updated support section
Perfection ...
Updated support section