[DOC beta] Ember.View documentation cleanup.

Fixed a number of issues:

  * Invalid comment breaking `concatenatedProperties` docs.
  * Invalid ordering. All directives (including `@private`) must come at the end of the comment block.
    Before:
    ![before screenshot](https://www.monosnap.com/image/SZVx0YM9tqVFQ6cgXPzuZT3pk.png)

    After:
    ![after screenshot](https://www.monosnap.com/image/HnbgdGL4TgNnvazETX8aq8vf0.png)
  * Fixup param name/type for `replaceIn`, `invokeRecursively`.
  * Fixup formatting for `init`.