#191 Redundant angle brackets need omitting

[BODARD Gabriel]

The EpiDoc XSLT Stylesheets currently have a template that uses Regex to remove closing immediately followed by opening square brackets (i.e. ][ or ] [)--that are artifacts of <supplied reason=lost> or <gap>.

We also need to do the same for angle brackets (artefacts of <supplied reason=ommitted etc.).