Drop HTML in custom board titles.

This could be useful, but the fact that it's been broken almost
since its creation indicates nobody's actually using it.

As with the file info formatting, I'll mention it on the changelog
and add it back with better security if someone actually wants to
use it.

src/Miscellaneous/Banner.coffee

@@ -46,12 +46,10 @@ Banner =
       return @blur() if !e.shiftKey and e.keyCode is 13
 
     focus: ->
-      @textContent = @innerHTML
-
       string = "#{g.BOARD}.#{@className}"
       string2 = "#{string}.orig"
 
-      items = {title: @innerHTML}
+      items = {title: @textContent}
       items[string] = ''
       items[string2] = false
 
@@ -62,25 +60,24 @@ Banner =
       return
 
     blur: ->
-      @innerHTML = @textContent
       @contentEditable = false
       $.set "#{g.BOARD}.#{@className}", @textContent
 
   custom: (child) ->
-    cachedTest = child.innerHTML
+    cachedTest = child.textContent
     string = "#{g.BOARD}.#{child.className}"
 
     $.on child, 'click keydown focus blur', (e) -> Banner.cb[e.type].apply @, [e]
 
     $.get string, cachedTest, (item) ->
       return unless title = item[string]
-      return child.innerHTML = title if Conf['Persistent Custom Board Titles']
+      return child.textContent = title if Conf['Persistent Custom Board Titles']
 
       string2 = "#{string}.orig"
 
       $.get string2, cachedTest, (itemb) ->
        if cachedTest is itemb[string2]
-          child.innerHTML = title
+          child.textContent = title
         else
           $.set string, cachedTest
           $.set string2, cachedTest