Show emoji popup if : preceeding by space or is new line.
Merge pull request #3786 from sashkab/emoji-fix

Show emoji popup if colon preceding by space or is new line.
Link to install guide must point to latest release automatically,
Merge branch 'install-link' of /home/git/repositories/gitlab/gitlabhq
Init aws support for file storage
Update all gems!
gitlab_git to 1.0.6, return submodule rendering in tree