GeocoderViewModel.search command not executed when user clicks a suggestion

Brought up on the forum here: https://groups.google.com/forum/#!topic/cesium-dev/IH6VTxePo3o

The `search` command executes when the user types a search and hits enter or clicks the search button, and also when selecting a suggestion form the drop down list with the arrow keys and enter, but not when clicking a suggestion with the mouse.

Start by locating GeocoderViewModel and reproducing suggestion selection with the mouse versus the arrow keys and Enter. Trace the suggestion click handling and search command path; the issue is done when clicking a suggestion executes the search command just as keyboard selection does.

Written by the indexing model from the issue text.