Support JetParameter in element description provider

idea/src/org/jetbrains/jet/plugin/findUsages/JetElementDescriptionProvider.kt

@@ -40,6 +40,7 @@ public class JetElementDescriptionProvider : ElementDescriptionProvider {
             is JetNamedFunction -> "function"
             is JetProperty -> "property"
             is JetTypeParameter -> "type parameter"
+            is JetParameter -> "parameter"
             else -> null
         }
 
@@ -55,7 +56,7 @@ public class JetElementDescriptionProvider : ElementDescriptionProvider {
                 if (kind != null) {
                     val descriptor = (targetElement as JetDeclaration).descriptor
                     if (descriptor != null) {
-                        val desc = if (location.includeParent() && targetElement !is JetTypeParameter) {
+                        val desc = if (location.includeParent() && targetElement !is JetTypeParameter && targetElement !is JetParameter) {
                             DescriptorUtils.getFqName(descriptor).asString()
                         }
                         else descriptor.getName().asString()

idea/testData/safeDelete/deleteValueParameter/kotlinValueParameter/propertyParam1.kt.messages

@@ -1 +1 @@
-method A.getName() has 1 usage that is not safe to delete.
+parameter name has 1 usage that is not safe to delete.

idea/testData/safeDelete/deleteValueParameter/kotlinValueParameterWithJava/propertyParam1.kt.messages

@@ -1 +1 @@
-method A.getName() has 2 usages that are not safe to delete.
+parameter name has 2 usages that are not safe to delete.