Add 'Post on Captcha Completion' option.

src/General/Config.coffee

@@ -379,6 +379,10 @@ Config =
         false
         'Automatically load the captcha in the QR even if your post is empty.'
       ]
+      'Post on Captcha Completion': [
+        false
+        'Submit the post immediately when the captcha is completed.'
+      ]
       'Bottom QR Link': [
         true
         'Places a link on the bottom of threads to open the QR.'

src/Posting/QR.captcha.coffee

@@ -122,22 +122,25 @@ QR.captcha =
       null
 
   save: (pasted) ->
-    response = $('textarea', @nodes.container).value
-    timeout  = (if pasted then @setupTime else Date.now()) + 2 * $.MINUTE
-    if QR.cooldown.auto and @needed()
-      @shouldFocus = true
-      @reload()
-    else
-      QR.nodes.status.focus()
-      if pasted
-        @destroy()
-      else
-        @timeouts.destroy ?= setTimeout @destroy.bind(@), 3 * $.SECOND
+    reload = QR.cooldown.auto and @needed()
     $.forceSync 'captchas'
-    @captchas.push {response, timeout}
+    @captchas.push
+      response: $('textarea', @nodes.container).value
+      timeout:  (if pasted then @setupTime else Date.now()) + 2 * $.MINUTE
     @count()
     $.set 'captchas', @captchas
 
+    if reload
+      @shouldFocus = true
+      return @reload()
+
+    if pasted
+      @destroy()
+    else
+      @timeouts.destroy ?= setTimeout @destroy.bind(@), 3 * $.SECOND
+    QR.nodes.status.focus()
+    QR.submit() if Conf['Post on Captcha Completion']
+
   clear: ->
     return unless @captchas.length
     now = Date.now()