core.js: Deindent large chunk of the file
core.js: Deindent large chunk of the file

Several functions were unnecessarily placed in a closure meant to wrap
only the definition of OO.ui.msg.

Change-Id: I888952a4ec033602788d8e3416c7fed0c4f10263

wikimedia/oojs-ui,wikimedia/oojs-ui,wikimedia/oojs-ui,wikimedia/oojs-ui