silly attempt to make calc plugin last longer before google totally breaks it

cookies are an attempt to make it less likely to realise cloudbot is a bot, and the IE user agent is to force it to use the legacy HTML we can actually parse

plugins/gcalc.py

@@ -6,9 +6,10 @@ from util import hook, http
 def calc(inp):
     """calc <term> -- Calculate <term> with Google Calc."""
 
-    soup = http.get_soup('http://www.google.com/search', q=inp)
+    soup = http.get_soup('http://www.google.com/search', q=inp, cookies=True, user_agent=http.ua_internetexplorer)
 
     result = soup.find('h2', {'class': 'r'})
+
     exponent = result.find('sup')
     if not result:
         return "Could not calculate '{}'".format(inp)