Completion of lambda parameters

Also changed policy for sorting of smart completion items in basic completion

 #KT-16800 Fixed
 #KT-12002 Fixed

idea/idea-completion/testData/weighers/basic/LambdaSignature.kt

@@ -0,0 +1,8 @@
+fun <R> String.fold(initial: R, operation: (acc: R, Char) -> R): R = TODO()
+
+fun foo(p: Int) {
+    "abc".fold(1) { <caret> }
+}
+
+// ORDER: "acc, c ->"
+// ORDER: "acc: Int, c: Char ->"

idea/idea-completion/testData/weighers/basic/NamedParameters.kt

@@ -20,6 +20,6 @@ fun test(listParam: Int) {
 // ORDER: listImportedVal
 // ORDER: listThisFileFun
 // ORDER: listImportedFun
-// ORDER: listMatch
-// ORDER: listNew
+// ORDER: "listMatch ="
+// ORDER: "listNew ="
 // ORDER: listFunNotMatchingType

idea/idea-completion/testData/weighers/basic/NamedParameters2.kt

@@ -6,6 +6,6 @@ fun test(tri: Boolean, trb: Int) {
 
 // ORDER: true
 // ORDER: tri
-// ORDER: tra
+// ORDER: "tra ="
 // ORDER: trb
 // ORDER: try

idea/idea-completion/testData/weighers/basic/NamedParameters3.kt

@@ -11,5 +11,5 @@ fun test(insa: Any) {
 }
 
 // ORDER: instance
-// ORDER: insp
+// ORDER: "insp ="
 // ORDER: insa

idea/idea-completion/testData/weighers/basic/expectedInfo/MultiArgsItem.kt

@@ -8,5 +8,5 @@ fun bar(b: I2, a: I1, c: I1) {
 }
 
 // ORDER: a
-// ORDER: c
 // ORDER: "a, b, c"
+// ORDER: c