Fix 404 error while displaying json files.

It uses params[:id] instead of request.fullpath.
It should fix #3132.
Updated links to gitlab.com and added the last doc files.
security update of crack gem
Merge branch 'fix-404-json-file' of https://github.com/hiroponz/gitlabhq into hiroponz-fix-404-json-file
Update databases.md
move edit to separate controller. This fixes #3265
Merge branch 'hiroponz-fix-404-json-file'
Update database.yml.postgresql
Merge pull request #3335 from zzet/patch-4

Update databases.md
Fixing a minor typo in the installation docs
Merge branch 'more-links-in-readme' of /home/git/repositories/gitlab/gitlabhq
Merge pull request #3354 from vinodc/install-docs-typo-fix

Fixing a minor typo in the installation docs
add admin ability to edit project settings from project area
Use TransferContext for project
transfer also wiki repository when transfer a project
Make transfer action in project controller
remove project edit from admin area. Redesigned project page in admin area
Removed not relevant tests for admin.projects
Updatev security tests since admin is a superuser now. Has access to any project
Admin.projects: remove views and route specs