About time for 2.0.10
Ensure that Refinery::Core::Engine is mounted for specs.

Fixes regression caused by Rails 3.2.13

Conflicts:
	core/spec/lib/refinery/application_controller_spec.rb
Move wysiwyg fields into a partial for easier maintainability.

Conflicts:
	core/lib/generators/refinery/engine/templates/app/views/refinery/namespace/admin/plural_name/_form.html.erb

Fixes #2236
Small indentation fix caught my eye
Documented solution to #2236
Fix #2248, convert ActiveSupport::SafeBuffer to string using #to_str
Fix grammar issue.

Change "Refinery comprises of" to the more grammatically correct "Refinery is comprised of".

This will need to be merged into 2-0-stable as well.
Fix link semantics.

Markdown link semantics was being used in this textile file resulting in no link and bleed-through of the relative url.
Update and rename 4 - Extending Controllers and Models with Decorators.textile to 4 - Extending Controllers with Decorators.textile

I removed all mention of extending models from this file (including the title) because there is another document on extending models and this document does not provide any direction for extending models.
Wrote a guide called "Relating Resources in an extension".

Fixes #2242
[ci skip]
fix problem with symbol array as view_template_whitelist
Fixed view_template_whitelist and layout_template_whitelist when assigned with symbols.

As per https://twitter.com/yelinaung/status/331435726967275520