Make search operators case insensitive.

In light of the fact that all searching against the database is done
using ILIKE pattern matching, the only truly case-sensitive part of
the search query was search operator keys. Rather than lowercase the
keys in `criteria` before returning, we instead lowercase the entire
search string at the beginning of parsing. This will further enforce
case-insensitivity on the design of search going forward.

files/routes/search.py

@@ -12,7 +12,7 @@ valid_params=[
 ]
 
 def searchparse(text):
-
+	text = text.lower()
 
 	criteria = {x[0]:x[1] for x in query_regex.findall(text)}