Knockout view model overhaul

* Config panel now obsolete. Just add a URL with a polling frequency at top of page and also remove a job by simply closing it.
* Give each build it's own configurable polling refresh rate.
* Improve Polling errors. Have each build continue to poll for info regardless of ajax result.
* Improved console logging to reduce url noise

*NOTE: This will break the current page.*

**Update: This *will not* break anymore. The `localStorage` key has been changed for clarity anyway...**
**Update 2: Technically, it will break in that the builds will need to be re-entered.**