RouteSet#url_for was modifying the options hash that belong to the
caller

This reverts commit ddb98755.

Reason: The links must be relative so that they will work both in edge
and stable api sites.

content_tag used instead string for option

mo fasta and mo betta the url_for

removed unnecessary block when using fetch

prevent the cache sweeper ignores NoMethodError

Dependency fix for activesupport

Optimistic locking: lock_version needed type information.

In particular, removed "pages that require to restrict access somehow" and shortened "Action Caching works like Page Caching except for the fact that the incoming web request does go from the webserver to the Rails stack and Action Pack so that before filters can be run on it before the cache is served".

This reverts commit aeb228c5.

Reason: The links are meant to be consumed in the api and not on GitHub.

Updated/changed unneeded tr/gsubs

logger.silence is deprecated

Updated migrations.textile to change :integer on line 807 to :boolean, as it was earlier in the example. :flag is a boolean, not an integer. (defaults to false)

No need to extend ActiveSupport::Extend here

This reverts commit aeb228c5.

Reason: The links are meant to be consumed in the api and not on GitHub.

Conflicts:
	guides/source/engines.textile

This reverts commit 0a35acb8.

Reason: Let's cross the bridge when we reach there.

correction to server stop statement added