Labissues basics

Fetch from github, sort by priority, coefficients in config file.
Helpstring
Remove whatdo command.
Default repo in config.
Optional repo argument.

#4
Fixes NoneType bug.
New config coefficient style

reponame.coefficients = label:3,label2:9.4
Configure
Merge branch 'labissues'

Conflicts:
	willie/modules/labstatus.py