www/cliqz: Updates the patches and expiry date.

• Updates the expiry date to match lang/python27 because www/firefox isn't ready as well.
• Remove patch-bug847568 - Now use bundled harfbuzz / graphite2 since the build is now fixed.
• Import patch-bug1607052 and patch-bug1622551 from www/firefox.
• Referesh patch-bug1594027
• Bumps the PORTREVISION

Reviewed by: jbeich