Demo not working for users outside uberVU

Made it so when no labels are provided, the plugin will show all issues.

cc: @skidding @catalinmiron 
As I said to @NiGhTTraX as well, I like to keep project-related rules in the project .gitignore and user-related rules in the [global gitignore](https://help.github.com/articles/ignoring-files#create-a-global-gitignore)