use re.search() rather than re.match() in a couple places

(search() looks for the regex anywhere in the string whereas
match() only looks for the regex starting from the beginning)

Module.py

@@ -52,7 +52,7 @@ class Module(object):
         # setup regexp function in sqlite
         def regexp(expr, item):
             reg = re.compile(expr)
-            return reg.match(item) is not None
+            return reg.search(item) is not None
         self.conn.create_function('REGEXP', 2, regexp)
 
         # set up database for this module

modules/Alias.py

@@ -69,7 +69,7 @@ class Alias(Module):
 
             for alias in alias_list:
                 alias_re = re.compile(alias)
-                if alias_re.match(what):
+                if alias_re.search(what):
                     command = re.sub(alias, self.config.get(self.__class__.__name__, alias), what)
                     reply = self.try_recursion(connection, event, nick, userhost, None, command, admin_unlocked)
                     if not reply == command: