Send window commands instead of invoking window APIs directly.

For some events generated on the browser side, like reloading, closing
window, we should not handle those events directly, instead we should
send the corresponding commands to the renderer and let the renderer
deal with it.

The window.reload() is also moved to atom.reload(), because I saw things
like toggleFullScreen(), focus(), toggleDevTools() are also there.

src/app/window.coffee

@@ -111,13 +111,13 @@ window.unloadConfigWindow = ->
   $(window).off('focus blur before')
 
 window.handleEvents = ->
-  ipc.on 'close', -> $(window).trigger 'window:close'
+  ipc.on 'command', (command) -> console.log command; $(window).trigger command
 
   $(window).command 'window:toggle-full-screen', => atom.toggleFullScreen()
   $(window).on 'focus', -> $("body").removeClass('is-blurred')
   $(window).on 'blur',  -> $("body").addClass('is-blurred')
   $(window).command 'window:close', => confirmClose()
-  $(window).command 'window:reload', => reload()
+  $(window).command 'window:reload', => atom.reload()
 
   $(document).on 'click', 'a', (e) ->
     location = $(e.target).attr('href')
@@ -224,16 +224,6 @@ window.applyStylesheet = (id, text, ttype = 'bundled') ->
 window.closeWithoutConfirm = ->
   ipc.sendChannel 'close-without-confirm'
 
-window.reload = ->
-  timesReloaded = process.global.timesReloaded ? 0
-  ++timesReloaded
-
-  if timesReloaded > 3
-    atom.restartRendererProcess()
-  else
-    process.global.timesReloaded = timesReloaded
-    $native.reload()
-
 window.onerror = ->
   atom.openDevTools()