[Orgmode] footnote export fails if footnote indented

[Dan Davison]

If you hit <TAB> on a footnote definition, it indents it away from
column 1, to align with its heading. However, the footnote definition
needs to start in column 1 in order for the footnote to be correctly
exported. It would be nice if the footnote exported correctly even when
indented (or if that's problematic, then a less preferable solution
would be having <TAB> not indent it).

Dan

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* A
  That[1] was a reference to a footnote.

* Footnotes
  [1] This is the footnote
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