- KT-1147 Can't see local variable in completion

- Disable class level keywords from method parameters list
- Reorganize completion tests to separate methods

idea/testData/completion/basic/InMiddleOfNamespace.kt

@@ -0,0 +1,9 @@
+package testdata.kotlin.data
+
+class TestSample() {
+    fun main(args : Array<String>) {
+        testdata.kot<caret>lin.data.TestSample()
+    }
+}
+
+// EXIST: kotlin