Fixed broken link in README

The link http://gogs.io/docs/intro/ produces a 404 error and is used in the README updated it to http://gogs.io/docs/intro which correctly links to the introductory documentation

Adding simple script to install Gogs as a Windows service.

Sanitize input to LDAP authentication module

workaround for reverse proxy, ssh, submodule

Update docker `socat` link creation

- Remove port 80 & 443 unused by the container
- Add port 3000 used by gogs application

- `start.sh` will now verify that the port is not already used by another service
- Resolve #1807
- Log when a service is created, or could not be created
- Keep track of which port is already used, including goes & sshd port

fix build error with PKGBUILD (archlinux, x64)

fix build error with PKGBUILD (archlinux)

Fix import path

Simplify disable Gravatar preference wording

"Enable this to disable..." is needlessly confusing, simplify it by being
upfront that this setting disables the Gravatar fetching.

fix typo in README for Docker