Merge pull request #500 from MichaelNedzelsky/kt5320

JS Backend: fixed associativity of JsCondition(ternary operator).

Fixed wrong code generation when use JsCondition(ternary operator) as condition of simple `if`(JsCondition).

#KT-5320 fixed

js/js.tests/test/org/jetbrains/k2js/test/semantics/MiscTest.java

@@ -194,4 +194,8 @@ public final class MiscTest extends AbstractExpressionTest {
     public void testKt5058() throws Exception {
         checkFooBoxIsTrue("KT-5058.kt");
     }
+
+    public void testRightAssocForGeneratedConditionalOperator() throws Exception {
+        checkFooBoxIsOk();
+    }
 }