[search] Hide horizontal column swap when there is only one

Uncaught TypeError: Cannot read property 'rows' of undefined
    at eval (eval at globalEval (jquery.js:330), <anonymous>:1642:25)
    at Function.map (jquery.js:468)
    at getWidgets (eval at globalEval (jquery.js:330), <anonymous>:1641:16)
    at eval (eval at globalEval (jquery.js:330), <anonymous>:1661:14)
    at Function.evaluateImmediate_CallReadThenEndDependencyDetection (knockout-latest.debug.js:2142)
    at Function.evaluateImmediate_CallReadWithDependencyDetection (knockout-latest.debug.js:2114)
    at Function.evaluateImmediate (knockout-latest.debug.js:2078)
    at r (knockout-latest.debug.js:1886)
    at knockout-latest.debug.js:1355
    at e (knockout-latest.debug.js:1087)
(anonymous) @ VM1624:1642
map @ jquery.js:468
getWidgets @ VM1624:1641
(anonymous) @ VM1624:1661
evaluateImmediate_CallReadThenEndDependencyDetection @ knockout-latest.debug.js:2142
evaluateImmediate_CallReadWithDependencyDetection @ knockout-latest.debug.js:2114
evaluateImmediate @ knockout-latest.debug.js:2078
r @ knockout-latest.debug.js:1886
(anonymous) @ knockout-latest.debug.js:1355
e @ knockout-latest.debug.js:1087
t @ knockout-latest.debug.js:1097
knockout-latest.debug.js:419 Uncaught ReferenceError: Unable to process binding "css: function (){return klass }"
Message: klass is not defined
    at css (eval at t (knockout-latest.debug.js:2936), <anonymous>:3:56)
    at update (knockout-latest.debug.js:4130)
    at function.y.dependentObservable.disposeWhenNodeIsRemoved (knockout-latest.debug.js:3318)
    at Function.evaluateImmediate_CallReadThenEndDependencyDetection (knockout-latest.debug.js:2142)
    at Function.evaluateImmediate_CallReadWithDependencyDetection (knockout-latest.debug.js:2114)
    at Function.evaluateImmediate (knockout-latest.debug.js:2078)
    at Object.y.computed.y.dependentObservable (knockout-latest.debug.js:1939)
    at knockout-latest.debug.js:3316
    at Object.arrayForEach (knockout-latest.debug.js:159)
    at p (knockout-latest.debug.js:3288)