Add isActive method Navigation Page Uri.

[tomshaw]

This PR adds active links to Zend Navigation pages generated using the uri container key. This is an attempt to fix #4346

[DASPRiD]

1. Why injecting the router, when injecting the request object is enough?
2. The URI navigation page can not just contain a path, but query parameters, hostname, scheme and such as well. Those should be taken into account.

[tomshaw]

I like the idea of using the request object, the router was already available thats why I used it. How would you match the active route with only the uri string to go by, that was the dilemma i had trying to make the active route active css wise. The router its so much more definitive than a uri string but the above works for simple use cases.

[froschdesign]

@tomshaw

1. I think, we should only have a "soft" dependency to other ZF components for the page type "URI". So that the Zend\Navigation component can also be used outside of a ZF-MVC application.
2. A "soft" dependency to the request object is enough.
3. Please do not forgot unit tests.
4. Thanks! 😄

[weierophinney]

I agree with @DASPRiD and @froschdesign here. If you can make the changes in the by Tuesday at noon GMT, I'll consider them for 2.2.0; otherwise, we'll have to delay them to 2.3.0.

[tomshaw]

Awesome! I'm not an expert with phpunit but I'll try my best. :)

[froschdesign]

Please add one clean commit! There are to many forward and backward steps in your commits.

[weierophinney]

Merged to develop for release in 2.3.0.