rewrote full text indexing to consider latest version and appendix files
use plone.api to get core tools
deal with the title we get from solr brain (?)
use portal object to access tools, and use get_value to get attributes
fix wrong encoding, oops
use isinstance() to test for unicode object
Merge branch 'master' of git+ssh://repos.entrouvert.org/collective.dms.basecontent