Add missing types (#4836)

* Add missing types

* Added missing types to DrawerActions

flow/react-navigation.js

@@ -143,6 +143,14 @@ declare module 'react-navigation' {
     +type: 'Navigation/TOGGLE_DRAWER',
     +key?: string,
   |};
+  declare export type NavigationDrawerOpenedAction = {|
+    +type: 'Navigation/DRAWER_OPENED',
+    +key?: string,
+  |};
+  declare export type NavigationDrawerClosedAction = {|
+    +type: 'Navigation/DRAWER_CLOSED',
+    +key?: string,
+  |};
 
   declare export type NavigationAction =
     | NavigationBackAction
@@ -157,7 +165,9 @@ declare module 'react-navigation' {
     | NavigationCompleteTransitionAction
     | NavigationOpenDrawerAction
     | NavigationCloseDrawerAction
-    | NavigationToggleDrawerAction;
+    | NavigationToggleDrawerAction
+    | NavigationDrawerOpenedAction
+    | NavigationDrawerClosedAction;
 
   /**
    * NavigationState is a tree of routes for a single navigator, where each
@@ -395,6 +405,7 @@ declare module 'react-navigation' {
     headerMode?: HeaderMode,
     headerTransitionPreset?: 'fade-in-place' | 'uikit',
     headerLayoutPreset?: 'left' | 'center',
+    headerBackTitleVisible?: boolean,
     cardStyle?: ViewStyleProp,
     transitionConfig?: () => TransitionConfig,
     onTransitionStart?: () => void,
@@ -814,6 +825,8 @@ declare module 'react-navigation' {
     OPEN_DRAWER: 'Navigation/OPEN_DRAWER',
     CLOSE_DRAWER: 'Navigation/CLOSE_DRAWER',
     TOGGLE_DRAWER: 'Navigation/TOGGLE_DRAWER',
+    DRAWER_OPENED: 'Navigation/DRAWER_OPENED',
+    DRAWER_CLOSED: 'Navigation/DRAWER_CLOSED',
 
     openDrawer: (payload: {
       key?: string,