Added global settings section

Started the global setting section with disable showing of thumbnail globally
Added check if flexslider elem exists
Removed the hover on the attachment edit links
Removed debug statement from meta box
Removed plugin init/update/etc class

Class is un-used for the time being, really should implement it some day….
Cleaned up and added setting to disable short codes
Added setting to disable crop/resize feature
altered the default show post parameters for the attachment list
Re-worded a few settings
Fixed issues with attachments not showing up when using wpba_get_attachments()
Updated wpba_get_attachments() readme documentation
When retrieving attachments if the post is null return empty array
Added function to check if attachments exist
Updated version numbers
Fixed issue with Wysija Newsletter
Added no attachments error message for attachment list
Added documentation for wp_attachments_exist()
Setup flexslider properties control
Stop flex slider script from being enqueued for now
Added change log info