moved config loads into into register w/callbacks

enable 'use strict'
moved skip_list & skip_list_exclude from globals into plugin object
load_excludes & load_clamd_ini are loaded in register with callbacks
clamd: test updates due to reload changes
add additional clamd tests
replace some indention with earlier loop exiting
clamav: revert karma.ini changes

instead, added clamd to the "allow reject" list in karma plugin
Merge pull request #708 from msimerson/clamav-gsb

clamd: load config once with callback