Handle errors emitted by redis by listening on error event to avoid crashes

http://nodejs.org/api/events.html#events_class_events_eventemitter
When an EventEmitter instance experiences an error, the typical action is to emit an 'error' event. Error events are treated as a special case in node. If there is no listener for it, then the default action is to print a stack trace and exit the program.
Redis emits errors in several places.
Consistent use of leading spaces, fix typo
update job toggles & log selection issues

Right now you can't really select and copy past your job log.
The job view toggle on click and log text is refreshed every 3sec
which make it hard to select anything..

So this is a quick fix to:
- restraint toggle to the content div
- Refresh log when text changes only
Merge branch 'patch-1' of https://github.com/dandv/kue into develop
Merge branch 'handle-redis-emitted-errors' of https://github.com/clickstream/kue into develop