Spell removable and movable using modern English

Also...

* Update OOjs UI to v0.1.0-pre (5ffe63d088)
* Make template parameter text boxes shorter (3em down from 10em)
* Reorder extendObject calls to not modify incoming config objects
* Allow level option to default to 0, rather than specifically defining it
* Use icon button widgets with remove icons for parameter, placeholder,
  template and content removal buttons

Change-Id: I29db9d814fab5cf4debd0fc7bab6f51475cb0f94
Merge "Spell removable and movable using modern English"