Fix navigation from stack trace

JetExceptionFilter now correctly assigns hyperlinks to items of form
"namespace$...", found in exception stack traces

 #KT-2489 Fixed
 #KT-2941 Fixed

idea/testData/filters/exceptionFilter/kt2489/a.kt

@@ -0,0 +1,6 @@
+fun a() {
+    val f = {
+        null!!
+    }
+    f()
+}

idea/testData/filters/exceptionFilter/kt2489/main.kt

@@ -0,0 +1,6 @@
+fun main(args: Array<String>) {
+    val f = {
+        null!!
+    }
+    f()
+}