Provides an interface for classes to implement their own flush()
functionality. This function gets called early in a request on
all implementations of Flushable when flush=1|all is requested in the
URL.
This fix came out of an issue where Requirements combined files were not
being cleaned up after dev/build?flush=1, due to the fact that flush
would only occur when you called it while on a page that used those
combined files, but not in any other contexts. This will now call flush
on any implementors of Flushable regardless of the context of where
flush was called.
Changed Fragment links to Anchor links, however it's is slighty confusing what the right name for the thing is.
According to w3.org: "Some URIs refer to a location within a resource. This kind of URI ends with "#" followed by an anchor identifier (called the fragment identifier)." - http://www.w3.org/TR/html401/intro/intro.html#fragment-uri
After doing some research in the most common used name for the #some-link identifier I came to the conclusion that most of the time (about 70% on StackOverflow/BlogArticles/Interwebz) Anchor-link was the term used to describe the identifier. Imho, Anchor is the prefered term for the identifier.
Is it acceptable to change fragment to anchor, since it seems more used?
Corrected many broken link-renderings. Also removed the "Related" link to [genericviews Module](http://silverstripe.org/generic-views-module) because it doesn't work, and I can't it elswhere.
There's no way to make things like [api:DataObject->beforeUpdateCMSFields()] work, is there?
I removed those kind of api tags (the links yielded a 404 page), and corrected a few other link-rendering issues.
CustomMember was extending the wrong class to be able to reference $this->owner.
Also, changed CustomMember to MyMemberExtension to remain consistent with the initial example.
BUG Resolve issue with DirectorTest breaking RequestProcessor
Injector::nest and Injector::unnest are introduced to better support sandboxing of testings.
Injector and Config ::nest and ::unnest support chaining
Test cases for both Injector::nest and Config::nest
Removed ; at the end of ->setConfig('dmyfields', true) in the three chain example. Is confusing for new users/developers who are not aware of how to chain methods.
Closes#3006
