- disabled synonym lookup for fields that have expand set to false

git-svn-id: svn://bar.ebi.ac.uk/trunk/arrayexpress-interface@24958 2913f559-6b04-0410-9a09-c530ee9f5186
- added leading wildcard support (in previous commit)
- disabled efo expansion for non-string fields
- removed non-ASCII symbol from synonyms table

git-svn-id: svn://bar.ebi.ac.uk/trunk/arrayexpress-interface@24959 2913f559-6b04-0410-9a09-c530ee9f5186