provide a default watcher-system

It should be extensible for other jobs.
add hets-support to god.
fix sidekiq-workers by preventing newline.
obey hound.
use logic name for urls.
add logic-name-url support to graphs.
add slug to logics

The slug is used as the param portion of a logic-url. It represents a
'cleaner' name where whitespace is replaced with underscores.
Additionally we also replace dots, stars and equality signs with
underscores.
create slugs for existing logics

This migration should contain a safeguard which should ensure that this
never fails (unless there is no logic class i guess...).
use slug to find logics in urls.
obey hound.
intial generalizations via OMS
some more generalizarion via OMS
additional generalization via OMS
additional generalization yet to be tested
refactor freshen-fixtures task for readability.
extract hets-cmdline-options into config.
freshen fixtures only when necessary

'Necessary' is being determined by the modified timestamp of the
hets-binary (or wrapper-script) in relation to the xml-file which is to
be produced.
add freshen-task to default rake-task

And rely on this task when running travis, again.
change in file corrected
create hets instance if needed