add missing fn ns declaration (#197)

Author: MikiDi

src/main/webapp/static/com/atomgraph/linkeddatahub/xsl/bootstrap/2.3.2/client/functions.xsl

@@ -20,6 +20,7 @@ xmlns:xs="http://www.w3.org/2001/XMLSchema"
 xmlns:map="http://www.w3.org/2005/xpath-functions/map"
 xmlns:json="http://www.w3.org/2005/xpath-functions"
 xmlns:array="http://www.w3.org/2005/xpath-functions/array"
+xmlns:fn="http://www.w3.org/2005/xpath-functions"
 xmlns:ac="∾"
 xmlns:ldh="&ldh;"
 xmlns:rdf="&rdf;"
@@ -166,4 +167,4 @@ exclude-result-prefixes="#all"
         <xsl:sequence select="ixsl:call(ldh:new('DOMParser', []), 'parseFromString', [ $string, $mime-type ])"/>
     </xsl:function>
 
-</xsl:stylesheet>
+</xsl:stylesheet>