Add namespace_id to project creation via API

Cleaned up and enhanced readme.

Finishing touches.

Make the layout more consistent.

This allows you to set the namespace ID for projects via the the API. By default it is created for the current user. You can assign it to the global namespace by passing `GLN` which translates to 'Global Namespace'.

Merge branch 'team-and-group-descriptions' of https://github.com/Undev/gitlabhq into Undev-team-and-group-descriptions

Conflicts:
	db/schema.rb

Distorted lines in `diff`

docs improvement

Merge branch 'link-to-issue-tracker' of https://github.com/Undev/gitlabhq into Undev-link-to-issue-tracker

Conflicts:
	Gemfile.lock

fix one of the possible causes of build failures

Update binding_of_caller to v0.7.1