res/desktop:use deepin menu instead of webkit menu for rename menu

1.set webkit webview setting "enable-dom-paste" true in lib/webview.c

tower:https://tower.im/projects/8f19f0bf0e754f0b82ef2c24bc230973/todos/b9bbef4a327b493c94e5bdc93c4ce3da/

Change-Id: Ief3de793cf726a49cd7aa424f2388946763ecdb4