add disable option to disable specific lint errors using pylint's --disable argument
disable keyword raises a pylint exception if message id not found - bubble that message up to the user
Status message stays as long as the cursor is on an error line.

Also, the message is restricted to the same view as the error, which
makes more sense than appearing on all the views.
make message_stay into a setting
add option to disable region outlines
change disable option to a list of strings, this prevents a possibly long line in the settings
Merge pull request #14 from KristoforMaynard/disable_outline

add option to disable region outlines
Merge conflict resolved
Merge conflict resolved