before a day passes with no commits at all, better have some fg-submit stuff :-)

before a day passes with no commits at all, better have some fg-submit stuff :-)
- drop the DEFAULT keyword in .fg-submit configuration files. That was
  a silly idea. The default rules are now always appended. One can still
  bypass them by ALLOWing or DENYing anything before, for example, by using
  DENY *, or ALLOW *.
- fix a typo that broke ~/.fg-submitrc loading (but ~/.fg-submit worked anyway)
- some minor improvments, cleanup and all that