KT-377 Prohibit 'super' as a receiver argument to extension functions

+ SEVERITY_LEVELS added instead of hardcoding weak errors
+ commit() in temporary trace removed the data, so that double commit does not cause duplication of data

compiler/testData/checkerWithErrorTypes/quick/ExtensionsCalledOnSuper.jet

@@ -0,0 +1,21 @@
+trait T {
+    fun foo() {}
+    fun buzz() {}
+    fun buzz1(i : Int) {}
+}
+
+fun T.bar() {}
+
+fun T.buzz() {}
+fun T.buzz1() {}
+
+class C : T {
+    fun test() {
+        fun T.buzz() {}
+        fun T.buzz1() {}
+        super.foo() // OK
+        <!SUPER_IS_NOT_AN_EXPRESSION!>super<!>.bar() // Error
+        super.buzz() // OK, resolved to a member
+        super.<!NO_VALUE_FOR_PARAMETER!>buzz1<!>() // Resolved to a member, but error: no parameter passed where required
+    }
+}

compiler/testData/checkerWithErrorTypes/quick/Super.jet

@@ -1,5 +1,17 @@
 namespace example;
 
+fun any(a : Any) {}
+
+fun notAnExpression() {
+    any(<!SUPER_IS_NOT_AN_EXPRESSION!>super<!>) // not an expression
+    if (<!SUPER_IS_NOT_AN_EXPRESSION!>super<!>) {} else {} // not an expression
+    val x = <!SUPER_IS_NOT_AN_EXPRESSION!>super<!> // not an expression
+    when (1) {
+        <!SUPER_IS_NOT_AN_EXPRESSION!>super<!> => 1 // not an expression
+    }
+
+}
+
 trait T {
     fun foo() {}
 }