sw: enable drawingml export of textframes by default

This was only available in experimental mode previously. Also note that
export of shapes (including group shapes) was already enabled
previously, this commit just enables the same for Writer Text Frames.

Change-Id: I53e7f3fac84328cea316a9811ecd5eecec79b23d
writerfilter: handle moveFromRangeEnd / moveToRangeEnd like bookmark end

For bookmarks, at the start we omit all attributes (name, id), and at
the end we emit only the id. Do the same for moveFromRangeEnd /
moveToRangeEnd, which didn't emit an id at the end before.

This is just the tokenizer part, dmapper should still handle them, which
is missing.

Change-Id: I3f42fdbd86785adb36a8ef1bffe9af14c4d81fa2