Added support for path parameters to generate links to multi view pages with path parameters.

[skuntsel]

This commit fills the gap that there is currently no component capable of generating links to multi view pages with path parameters. For this reason a new component is introduced, <o:pathParam>.

If you need to generate a link to a multi view page with path parameters you need to nest a path parameter in an outcome target component:

<h:link value="Link" outcome="multiview-supported-path">
    <o:pathParam value="first" />
    <o:pathParam value="second" />
</h:link>

Previously you had to fallback to a plain a element to achieve the same functionality that was error-prone because of custom view handlers.

This is a new simplifying look on the previous PR #412.

Another addition is a helper method to send a 301 redirect to the given URL to the Servlets.

[BalusC]

Great work. Thanks. I've only made some improvements, because the original implementation failed in following circumstances:

1. URL has a jsessonid appended; the original implementation placed path parameters after the jsessonid, this was incorrect.
2. URL has already existing path parameters; the original implementation didn't remove them.

I've also updated MultiViewsIT to test these cases.