Fix text/cdata nodes collection (follow Index Data’s changes to pz2.js)

a59ee0ce86aebff91e46adc1310f0a7699d88845

http://git.indexdata.com/?p=pazpar2.git;a=commit;h=a59ee0ce86aebff91e46adc1310f0a7699d88845
work around issue caused by recent changes in pz2.js

not sure whether these are intentional, each result Object in JS
now contains an element #text with spaces and linebreaks