.gitignore: added *~
.gitignore: added .directory
Closed #7.
- adding Whonix deb repository signing key with apt-key while building Whonix
- added whonix_shared/usr/bin/whonix_repository which can be used to easily disable Whonix's deb repository
- added DISTRUST_WHONIX_DEB_REPO environment variable, which can be used to easily set to 1 to disable Whonix's dep repository permanently