Fix ISLANDORA-990
Merge pull request #174 from ruebot/7.x-ISLANDORA-990

Fix ISLANDORA-990
escaping fields in advanced search
Merge branch '7.x' of https://github.com/willtp87/islandora_solr_search into HEAD
better doc
even better docs
better splitting
more splitting, using a constant
file did not write, stripslashes
Merge pull request #175 from willtp87/7.x.realbranch

7.x.realbranch