Add tmp/.gitkeep file to ensure tmp folder exists on clone

Clean up doc/installation.md

Closes #939

The install guide lists it as a requirement, so we might as well have it
by default.

Closes #1072

Changes to text in API documentation

use APP_ROOT in init-gitlab to specify root of project

Change @project instance variable to a local in views/help/markdown

It was erroneously appending the project name to the page's title, even
though the Help system isn't specific to one project.

Update User#identifier to conform to Gitolite 2.x's user pattern

Also modifies the specs a bit because I can't help myself.

Closes #480

[ci skip]

API pagination

API for new project creation

Update the references to the script and refer to it from the installation manual.

Update the references to the script and refer to it from the installation manual.

Indent the code block.

Trivial fix to docs/installation.md

Non interactive aws install

Give Resque route a name and use that for the iframe src

GFM spec redesign

Should now be much clearer about what each spec is actually testing.
For example, instead of testing stuff like link classes and titles in
every single call, we only test those things once, in their own specs.

Instead of doing this:

    link_to(commit.id, project_commit_path(project, id: commit.id))
    Note.create(noteable_id: commit.id, noteable_type: "Commit", ...)

It lets us do this:

    link_to(commit.id, project_commit_path(project, commit))
    Note.create(noteable: commit, ...)

Conflicts:
	doc/installation.md

Merge branch 'master' into non-interactive-aws-install

Conflicts:
	doc/installation.md

Fix merge mess in installation.md

Non-interactive AWS install by running a single script.

Complete non-interactive AWS install with one line.

Squash of 28 commits:

Initial commit of complete install script.

Must be sudo.

Non interactive prostgres.

Install mysql with unique password.

Service file.

Add init file.

Nginx config.

Script contains aws specific settings.

Update references after rename.

Prevent localhost ssh prompt.

Postfix with policyd.

Typo in localhost. Postfix package has other name. sudo -l session needs oneliners.

More sudo commands to prevent permission problems.

Change in existing file.

Change in existing file must be referenced.

Switch order.

Postfix comment.

Old way to generate password, less sudo.

todo login

Must use private ip and login instructions.

Starting up.

Fixed and checked various todos.

Use service. Set host name. Go to default dir.

Only works on next login.

Only replace first host.

Cleaned up the comments.

Link to nginx config.

Move to aws dir.

Update links to aws for interactive install.

Existing script stays at the same location.

Change directory. Use the new init scripts for gitlab service and nginx. Use the branch for file downloads. Update with newest changes to installation.md.

Correct reference.

Use master branch since we need the nginx condfig and use absolute paths.

Need to copy with sudo.