QuickFix for ELSE_MISPLACED_IN_WHEN.

idea/testData/quickfix/when/afterElseNotLastInWhen.kt

@@ -0,0 +1,9 @@
+// "Move else branch to the end" "true"
+fun test() {
+    val a = 12
+    when (a) {
+        1 -> { /* some code */ }
+        2 -> { /* some more code */ }
+        el<caret>se -> { /* other code */ }
+    }
+}

idea/testData/quickfix/when/afterTwoElseBranchesInWhen.kt

@@ -0,0 +1,16 @@
+// "Move else branch to the end" "false"
+// ERROR: 'else' entry must be the last one in a when-expression
+// ERROR: 'else' entry must be the last one in a when-expression
+// ERROR: Unreachable code
+// ERROR: Unreachable code
+package foo
+
+fun foo() {
+   var i = 2
+   when (i) {
+       1, 2 -> { /* some code */ }
+       el<caret>se -> { /* first else branch */ }
+       else -> { /* second else branch */ }
+       3 -> { /* some other code */ }
+   }
+}

idea/testData/quickfix/when/beforeElseNotLastInWhen.kt

@@ -0,0 +1,9 @@
+// "Move else branch to the end" "true"
+fun test() {
+    val a = 12
+    when (a) {
+        1 -> { /* some code */ }
+        el<caret>se -> { /* other code */ }
+        2 -> { /* some more code */ }
+    }
+}

idea/testData/quickfix/when/beforeTwoElseBranchesInWhen.kt

@@ -0,0 +1,16 @@
+// "Move else branch to the end" "false"
+// ERROR: 'else' entry must be the last one in a when-expression
+// ERROR: 'else' entry must be the last one in a when-expression
+// ERROR: Unreachable code
+// ERROR: Unreachable code
+package foo
+
+fun foo() {
+   var i = 2
+   when (i) {
+       1, 2 -> { /* some code */ }
+       el<caret>se -> { /* first else branch */ }
+       else -> { /* second else branch */ }
+       3 -> { /* some other code */ }
+   }
+}