[#1709][xs]: correct sql search so it correctly does unfiltered searc…

…h when passed '*:*' as query.

* commiting this fix in master because so tiny (plus had it in #1602 branch but thought better to commit here than there).

ckan/lib/search/sql.py

@@ -24,7 +24,7 @@ def run(self, query):
         def makelike(field):
             _attr = getattr(model.Package, field)
             return _attr.ilike('%' + term + '%')
-        if q and not (q == '""' or q == "''"):
+        if q and not (q == '""' or q == "''" or q == '*:*'):
             terms = q.split()
             # TODO: tags ...?
             fields = ['name', 'title', 'notes']