Add query executor with celery

- Switch to pymysql since it supports multi queries
- Outputs results to filesystem
- JS to check for results every 5s
- Shows SQL errors as well
- Use SWIG for client side formatting
- Use time.clock() for time comparison

Change-Id: I81279397d9e50aebf49417240cf9c5a918dc618b
Force all connections to be utf8

Change-Id: I7988d282ca2a820b51cb66c4aefdd3c70e38543f
Add proper query killer

Change-Id: I7b9c8e505c4992db088b25d0c8213d8e4290eec1