Add quickfix for adding 'lateinit'

Fixes #KT-17650

compiler/frontend/src/org/jetbrains/kotlin/psi/addRemoveModifier.kt

@@ -1,5 +1,5 @@
 /*
- * Copyright 2010-2016 JetBrains s.r.o.
+ * Copyright 2010-2017 JetBrains s.r.o.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -136,6 +136,7 @@ private val MODIFIERS_TO_REPLACE = mapOf(
 private val MODIFIERS_ORDER = listOf(PUBLIC_KEYWORD, PROTECTED_KEYWORD, PRIVATE_KEYWORD, INTERNAL_KEYWORD,
                                      FINAL_KEYWORD, OPEN_KEYWORD, ABSTRACT_KEYWORD,
                                      OVERRIDE_KEYWORD,
+                                     LATEINIT_KEYWORD,
                                      SUSPEND_KEYWORD,
                                      INNER_KEYWORD,
                                      ENUM_KEYWORD, COMPANION_KEYWORD, INFIX_KEYWORD, OPERATOR_KEYWORD, DATA_KEYWORD)