Add wheel chair accessibility information from ISIL registry

[acka47]

549 entries in the ISIL registry have information on wheelchair accessibility, see http://sigel.staatsbibliothek-berlin.de/suche.html?tx_sbbyaz_pi1[q]=barrierefrei. The information can be found in 032P.o, see e.g. the PicaPlus XML for DE-367

<ppxml:tag id="032P" occ="">
    <ppxml:subf id="a">Husemannstr. 12</ppxml:subf>
    <ppxml:subf id="b">Witten</ppxml:subf>
    <ppxml:subf id="d">DE</ppxml:subf>
    <ppxml:subf id="e">58452</ppxml:subf>
    <ppxml:subf id="f">Nordrhein-Westfalen</ppxml:subf>
    <ppxml:subf id="i">Di-Sa 10.00-18.00, So 12.00-18.00</ppxml:subf>
    <ppxml:subf id="k">13.41768</ppxml:subf>
    <ppxml:subf id="l">52.53774</ppxml:subf>
    <ppxml:subf id="n">05954036</ppxml:subf>
    <ppxml:subf id="o">barrierefrei</ppxml:subf>
    <ppxml:subf id="p">j</ppxml:subf>
    <ppxml:subf id="2">S</ppxml:subf>
</ppxml:tag>

Some have "nicht barrierefrei" as information, e.g. DE-Wit3:

<ppxml:tag id="032P" occ="">
    <ppxml:subf id="a">Augustastraße 58</ppxml:subf>
    <ppxml:subf id="b">Witten</ppxml:subf>
    <ppxml:subf id="d">DE</ppxml:subf>
    <ppxml:subf id="e">58452</ppxml:subf>
    <ppxml:subf id="f">Nordrhein-Westfalen</ppxml:subf>
    <ppxml:subf id="i">Nicht öffentlich zugänglich</ppxml:subf>
    <ppxml:subf id="k">7.33423</ppxml:subf>
    <ppxml:subf id="l">51.44475</ppxml:subf>
    <ppxml:subf id="n">05954036</ppxml:subf>
    <ppxml:subf id="o">nicht barrierefrei</ppxml:subf>
    <ppxml:subf id="p">j</ppxml:subf>
    <ppxml:subf id="z">im Hof</ppxml:subf>
    <ppxml:subf id="2">S</ppxml:subf>
</ppxml:tag>

Unfortunately, this is a free text field, so there might also be other content be found...

[TobiasNx]

@acka47 any Idea for a property? seems to be a quick "fix" with fix.