a) remove special handling of 0x0002 in our custom icu rules.
Which brings us a step closer to getting rid of at least
some of them in favour of the defaults
b) expand the 0x02 in SwTxtNode::BuildConversionMap like we
do for fields so
Good side effect is our word count and character count now take into account
the actual footnote indicator text, as does our cursor travelling. Both of
which are more word-alike.
Change-Id: I3b0024ac4b10934bee7a9e83b0fce08a18556c7b
f8f05d43de