Added 'type:' before "web mapping applications" in the search filter.

Although it was not of type "web mapping applications", the "national geographic" featured map had the phrase "web mapping applications" in its snippet (see snapshot below), that is why it was filtered out.

![4-22-2014 11-41-03 am](https://cloud.githubusercontent.com/assets/3813516/2769424/54668dc0-ca51-11e3-938f-fd0eea1fa175.png)

Resolves issue #16
@dotMorten for code review.
@rexhansen  for QA.