Improve configuration template security and allow grafana-server to be reached by appropiate ProxyPassReverse/RewriteRules directives.
- Better handle logging, do not duplicate "Forwarded" connection logs.
- Enabling reCAPTCHA for user logins via passwords if user requires it, by setting Header
- If ModPageSpeed is loaded, disable it to prevent issues
- Remove useless ProxyPassReverse to HOSTFQDN
- Pre-Include RemoteIPHeader and RemoteIPTrustedProxy if user needs it when behind another proxy like HAProxy