Remove hard-coded Perl path that causes email fetching to fail.

When a user installs a local Perl version to run MisterHouse
under instead of using the system-provided Perl, then the
hardcoded Perl path at the shebang in get_email causes the
module search path to be incorrect. /usr/bin/env perl
properly solves this issue.
Cbus update to support current CGate
Cbus update to support new and old message response formats
Cbus update to add debug flag test to logging statements, i.e. reduce logging
Merge pull request #391 from krkeegan/cbus

Cbus update to support current CGate
Merge pull request #249 from hollie/fix_get_email

Fix get email for non-system-wide Perl installations
Merge pull request #394 from hollie/master

Merge Master into Stable