UP-4266 Allow configuring search results to replace link text with portlet title

https://issues.jasig.org/browse/UP-4266

Allows configuring a list of portlet types that have their search results link text replaced with the portlet title.  I considered using SpEL and substitution tokens but really there is not anything other than portlet title you're likely to display and I didn't like the extra code to use SpEL and having to use {} or something instead of ${} in the servicesContext.xml to avoid initialization errors.  If a use case comes up, we can add SpEL later.

![uportal by jasig - chromium_003](https://cloud.githubusercontent.com/assets/1479823/4671073/33d36f30-557d-11e4-9e16-b851602cc844.png)