Update the org merge copy to be more accurate.

The selected org gets merged into the one that the admin is viewing.
Display tools in the dashboard sidebar.

This introduces the simple tool partial for uls of tools.
Merge pull request #600 from opscode/org_combine_copy_update

Update the org merge copy to be more accurate.
Structure and style the Add Tool view.
Merge pull request #601 from opscode/dashboard_tools

Display the current_user's tools in the dashboard sidebar.
Add space after chef icon on user profile sidebar.

[skip ci]
Merge pull request #603 from opscode/profile_sidebar_adjustments

Add space after chef icon on user profile sidebar.
Merge pull request #602 from opscode/style_add_tool

Structure and style the Add Tool view.
Be less specific when finding existing seed Account

The where clause is too specific for the Account seed data so it tries
to create a duplicate account (and fails) so this makes it less specific
only matching on username and provider.
Add seed data for tools

Add seed data for both knife plugins and ohai plugins (tools).
Refactor cookbook partial SCSS to be more generic

Since the styles for the tools partial are the same as the
cookbook partial this refactors the styles for the cookbook partial so
the class names are more generic so they may be used for tools.
Add tools index

Add a tools index that lists all tools.
Change Tool#user to Tool#owner

For consistency with Cookbook this changes Tool#user to Tool#owner and
adds a convenience method Tool#maintainer that fetches the owners
username.
Support tools atom feed
Remove useless cookbook classes.
Support filtering tools by type

Allow tools to be filtered by type based on Tool::ALLOWED_TYPES.
Limit allowed tool types

Limit and validate the allowed type of tools that can be created.
Abstract heading with buttons into common scss

There are now a bunch of places where we have UI with a title and
buttons to the right, this abtracts the cookbooks search styles for that
so it can be reused on the tools directory and user profile.
Change order for tools atom feed

Tools atom feed should be ordered by created at by default.
Fix botched merge conflict.