Updates bulk action name to logs instead of books
Add bulk action delete functionality
Fixes get_plugin_email and places method below register_plugin_email method.
Init CPT and taxonomy as soon as possible.

Using default priority caused issues errors due to taxonomy not being
set yet.
Modifies slug prefix to be more
Use $prefixed_term variable to reduce chance for mistakes in build term string
Modifies get_plugin_email to return empty string by default
Adds ability to email logs; Developer email now populates in to text field if set.