Issue 7316 - Add link to help center in Settings > Help > Support
as mentioned in https://gitlab.com/eyeo/adblockplus/abpui/adblockplusui/issues/276
- add static link to english only support
- remove G+
Edited by Andrea Giammarchi
as mentioned in https://gitlab.com/eyeo/adblockplus/abpui/adblockplusui/issues/276