Merge pull request #388 from isuftin/master

Update to geoserver overlay dependency, menu eye-button functionality
Slight refactor of how we deal with clearing pinned cards. Now clearing pinned cards brings the application back to initial zoom level as well as rebuilds the card deck.
In the session management section, you are able to maniupulate your current session set, export single sessions and import a new session set

While it isn't mandatory to do so, it is strongly suggested to reload the application after swithing sessions or creating a new session

'swithing' should be 'switching'
Clicking bounding box is the same as clicking "to map" on card.
Moved search control from navigation bar and plopped it onto the map. This allows us to create a secondary 'search' in the navigation bar