Adds register_plugin_email

Saves developer’s email as an option in the database to make it easy
for a user to email logs to a developer.
Removes $log_name parameter from API constructor
Adds pagination to UI
Modifies default sorting on error date column
Pull plugin name from comment_author field

Query should be faster and code should be more readable.
Adds delete errors UI
Updates $comment_date defaults to remove undefined index notices in comment.php
Significant updates to logger UI