exact match for paper by Doi #3134
* exact match considers 100% percent match and weight >= 40, should catch synonym
fix wrong redirect when species is specified in query
move inserting wildcard to _prep_query, to avoid modify operators and filters
add tests for fetching and search with specified species
Merge commit 'a810f41' into 246-search
revert back to OP_OR, term weights are summed for OR
and fix bad things with wildcard added to synonym
remove unneeded code
Merge pull request #3440 from WormBase/246-search

246 search related fixes