update celery to latest versions
downgrade PyMySQL to 0.5, 0.6 has too many bugs
tweak circus settings
only require `node_modules` for `make js`
move JS in stat page to separate file
combine JS files on stat page into one and upgrade JS libraries
remove no longer needed `js_bottom` template slot
first cut at a CSP policy with some unsafe elements
avoid and disallow inline styles, refs #55
init checkin of adding heka-py and heka-py-raven integration
added dependency on raven 3.4.1 and heka-py-raven 0.7