Added action for "search-list-action" combobox.
Added the HTML components for selection of search results.
Improved the behaviour on changing the value of "search-list-action".
Registered ddlcb under tamboti namespace.
Fixed for the double call to 'retrieve' url when user changes results
page.

References #126.
Merge pull request #167 from claudius108/master

Fixed the double call to 'retrieve' url when user changes results page and reintegrated the selection component