Delete bundle settings when content type is deleted to avoid content model mapping problems
Also delete cmodel mapping
Delete field settings when the field is removed from bundle
Send dsid to update functions
Merge pull request #3 from mitchmac/master

Remove deleted content types and fields from the islandora_sync db tables
Replace files from the same datastream rather than renaming
Avoid notice of unset value
Big clean up, few bug fixes snuck in
Removed unneeded todo
Validation for forms.