Add search box

Add search box to filter items in the current namespaces and current log
Either rely on the search term already being populated to `$scope.currentSearch` and don't accept a parameter or don't set `$scope.currentSearch = message;`.

Right now, I don't see a code path where `$scope.currentSearch` is not already equal to `message` since you're passing `$scope.currentSearch` to `$scope.search()`.