Refactor context menu actions and constants

This is in order to accomodate more stateful objects by separating the
context menu specific actions and constants into their own files.

app/actions/contextMenu.jsx

@@ -1,4 +1,4 @@
-import * as types from '../constants'
+import * as types from '../constants/contextMenu'
 
 export function updateContextMenu(items) {
       return { type: types.UPDATE_CONTEXT_MENU, items }

app/containers/App.jsx

@@ -2,7 +2,7 @@ import React from 'react'
 import getMuiTheme from 'material-ui/lib/styles/getMuiTheme'
 import Styles from 'material-ui/lib/styles'
 import mui from 'material-ui'
-import * as ContextMenuActions from '../actions'
+import * as ContextMenuActions from '../actions/contextMenu'
 
 import { bindActionCreators } from 'redux'
 import { connect } from 'react-redux'
@@ -15,7 +15,8 @@ import * as utils from 'utils'
 const {
     Popover,
     Menu,
-    MenuItem} = mui
+    MenuItem
+} = mui
 
 const DefaultRawTheme = Styles.LightRawTheme
 

app/reducers/contextMenu.jsx

@@ -1,4 +1,4 @@
-import { UPDATE_CONTEXT_MENU, OPEN_CONTEXT_MENU, CLOSE_CONTEXT_MENU } from '../constants'
+import { UPDATE_CONTEXT_MENU, OPEN_CONTEXT_MENU, CLOSE_CONTEXT_MENU } from '../constants/contextMenu'
 
 
 const initialState =