Only use Globalize.locale for slug_locale when that translation has a viable slug.

Fixes #1461
Fixed line ending in guide.
Update doc/guides/3 - Advanced Techniques and Tips/3 - Using Custom View or Layout Templates.textile

Bypass find_page filter when use custom view template
Updated friendly_id to support Rails 3.2.10+.

Conflicts:
	pages/refinerycms-pages.gemspec