Merge pull request #102 from VisualDNA/1-task-list-squashed

Added list of running tasks to the task list of the UI.
Merge branch '1-scheduled-tasks' of git://github.com/VisualDNA/luigi into VisualDNA-1-scheduled-tasks

Conflicts:
	luigi/static/visualiser/index.html
	luigi/static/visualiser/js/luigi.js
	luigi/static/visualiser/js/visualiserApp.js
Switch RawConfigParser -> ConfigParser.

Unsure how to unit test, but I did test it locally.
Merge pull request #106 from jcrobak/config

Switch RawConfigParser -> ConfigParser.
Added an error message when searching for a task that doesn't exist