Fix the help string for an argument
Return the correct path when caching elsewhere.

When the cache couldn't write the jobtype class to its intended
destination and writes to a tempfile instead, it should return the path
it actually wrote the class to instead of the originilly intended one.
Merge pull request #86 from guidow/jobtype_cache_bugfix

Return the correct path when caching elsewhere.
Merge pull request #85 from guidow/fix_help_string

Fix the help string for an argument
_uuid -> uuid, this attribute would be used outside the class too
Remove asserions, the job type should really check these.  At least make sure it's an instance we expect though
merging with origin/master
adding docstrings, moving LoggingThread to process module
move LoggingThread
adding kill/terminate/interrupt
removing extra whitespace