Checking the redis version will warn users that
are using an old version to update. Included
reference to the troubleshooting guide.

Move issues first since people submitting PR's are more into the OpenSource thinking. Hat tip Yves Senn.

Fix overlapping test case names.

s/was/were/ for plural subjects

Merge branch 'feature/refactoring_scopes_pr' of https://github.com/Undev/gitlabhq into Undev-feature/refactoring_scopes_pr

Conflicts:
	db/schema.rb

Install gems with user `git`, not `gitlab`

Fixed JSON description of system hook