add pref for debug logging
add pref for auto-update
merge v2.1 update
use DEV_MODE flag to avoid wiping out my changes
re-add default icon and art
removed comments from plugin_details, added "reason_hidden" instead
always pass "plugin" as a dict
use plugin title for title2 in PluginMenu
remove comments re "old tracking urls", add json field for "old_tracking_url"
explicitly set default thumb and art